US20110295249A1 - Fluid-Assisted Electrosurgical Devices, and Methods of Manufacture Thereof - Google Patents
Fluid-Assisted Electrosurgical Devices, and Methods of Manufacture Thereof Download PDFInfo
- Publication number
- US20110295249A1 US20110295249A1 US12/790,309 US79030910A US2011295249A1 US 20110295249 A1 US20110295249 A1 US 20110295249A1 US 79030910 A US79030910 A US 79030910A US 2011295249 A1 US2011295249 A1 US 2011295249A1
- Authority
- US
- United States
- Prior art keywords
- shaft member
- electrode
- fluid
- fluid delivery
- connector portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/148—Probes or electrodes therefor having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
- A61B2018/00029—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids open
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
Definitions
- This invention relates generally to the field of medical systems, devices and methods for use upon a body during surgery. More particularly, the invention relates to electrosurgical systems, devices and methods for use upon tissues of a human body during surgery, particularly open surgery and minimally invasive surgery such as laparoscopic surgery.
- Dry-tip electrosurgical devices e.g. monopolar pencil
- fluid-assisted electrosurgical devices have been developed which use saline to inhibit such undesirable effects, as well as cool the tissue being treated and electrically couple the device to the tissue.
- the present invention provides a further improvement to fluid-assisted electrosurgical devices by providing an improved construction which better promotes the manufacture thereof.
- the device comprises a handle, a rigid shaft member distal to the handle, and at least one electrode distal to the shaft member.
- the shaft member comprises a shaft member first body and a shaft member second body joined together along a length of the shaft member.
- the shaft member further comprises a plurality of longitudinally oriented shaft member passages. The passages may be parallel and positioned along side one another, and have a length defined by the shaft member first body and the shaft member second body.
- the shaft member first body and the shaft member second body may be made of a plastic material.
- the plurality of shaft member passages includes an electrical passage containing an electrical conductor, with the electrical conductor electrically coupled to the electrode.
- the electrical conductor may extend from a proximal end of the shaft member to a distal end of the shaft member where it may be in direct contact with the electrode.
- the electrical conductor and the electrode may contact one another within a receptacle for the electrode at a distal end of the shaft member.
- the electrical conductor may be made of sheet metal.
- the electrical conductor and at least one of the shaft member first body and the shaft member second body may have interconnecting mating features to position the electrical conductor relative to at least one of the shaft member first body and a shaft member second body.
- the interconnecting mating features may comprise a keyway and a key configured to interconnect with the keyway.
- the electrical conductor interconnecting mating feature may comprise the keyway, and the interconnecting mating feature of at least one of the shaft member first body and the shaft member second body may comprise the key configured to interconnect with the keyway.
- the keyway may be provided with at least one of the shaft member first body and shaft member second body and the key may be provided with the electrical conductor.
- the plurality of shaft member passages may include a fluid delivery passage, and the fluid delivery passage may be in fluid communication with a fluid outlet configured to provide fluid to the electrode.
- the fluid outlet may be at least partially defined by the electrode.
- the shaft member fluid delivery passage may pass through a shaft member connector portion configured to connect the shaft member fluid delivery passage with fluid delivery tubing within the handle.
- the shaft member connector portion may be defined by at least one of the shaft member first body and the shaft member second body, and may more particularly comprise a barbed connector portion.
- the device may comprise a first electrode and a second electrode
- the plurality of shaft member passages may include a first electrical passage and a second electrical passage which are isolated from one another.
- the first electrical passage may contain a first electrical conductor which is electrically coupled to the first electrode
- the second electrical passage may contain a second electrical conductor which is electrically coupled to the second electrode.
- a first fluid outlet may provide fluid to the first electrode and second fluid outlet may provide fluid to the second electrode.
- the shaft member fluid delivery passage may include a first branch and a second branch.
- the shaft member fluid delivery passage first branch may be in fluid communication with the first fluid outlet configured to provide fluid to the first electrode, and the shaft member fluid delivery passage second branch may be in fluid communication with the second fluid outlet configured to provide fluid to the second electrode.
- the first fluid outlet may be at least partially defined by the first electrode, and the second fluid outlet may be at least partially defined by the second electrode.
- the first electrode may include a first electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage first branch
- the second electrode may include a second electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage second branch.
- the first electrode fluid delivery passage may pass through a first electrode connector portion configured to connect the first electrode to the shaft member, and the second electrode fluid delivery passage may pass through a second electrode connector portion configured to connect the second electrode to the shaft member.
- the first electrode connector portion may comprise a barbed connector portion, and the second electrode connector portion may also comprise a barbed connector portion.
- the shaft member first body and the shaft member second body may be welded together.
- the plurality of longitudinally oriented shaft member passages may be separated from one another along a common weld line or seam.
- FIG. 1 is a front view of one embodiment of a system of the present invention having an electrosurgical unit in combination with a fluid source and handheld electrosurgical device;
- FIG. 2 is a graph of the RF power output versus impedance for the electrosurgical unit of FIG. 1 ;
- FIG. 3 is graph showing a relationship of fluid flow rate Q in units of cubic centimetres per minute (cc/min) on the Y-axis, and the RF power setting P S in units of watts on the X-axis;
- FIG. 4 is a perspective view of an electrosurgical device according to the present invention.
- FIG. 5 is an exploded perspective view of the device of FIG. 4 ;
- FIG. 6 is a close-up front perspective view of the shaft member of the device of FIG. 4 ;
- FIG. 7 is a close-up rear perspective view of the shaft member of the device of FIG. 4 ;
- FIG. 8 is an exploded perspective view of the shaft member of FIGS. 6 and 7 ;
- FIG. 9 is a close-up cross-sectional view of the shaft member of FIGS. 6 and 7 taken along line 9 - 9 of FIG. 6 ;
- FIG. 10 is a close-up cross-sectional view of the shaft member of FIGS. 6 and 7 taken along line 10 - 10 of FIG. 6 ;
- FIG. 11 is a cross-sectional view of the shaft member of FIGS. 6 and 7 taken along a length of conductor 70 ;
- FIG. 12 is a close-up cross-sectional view of a tip portion of the device of FIG. 4 with an exemplary fluid coupling to a tissue surface of tissue;
- the invention provides systems, devices and methods for treating tissue at a tissue treatment site during an electrosurgical procedure. This is particularly useful for procedures where it is desirable to shrink, coagulate and seal tissue against blood loss, for example, by shrinking lumens of blood vessels (e.g., arteries, veins).
- blood vessels e.g., arteries, veins.
- FIG. 1 shows a front view of one embodiment of a system 2 of the present invention having an electrosurgical unit 10 in combination with a fluid source 20 and a handheld electrosurgical device 30 .
- FIG. 1 further shows a movable cart 12 having a support member 14 which carries a platform 16 comprising a pedestal table to provide a flat, stable surface for location of the electrosurgical unit 10 .
- cart 2 further comprises a fluid source carrying pole 18 with a cross support for carrying fluid source 20 .
- fluid source 20 comprises a bag of fluid from which a fluid 22 flows through a drip chamber 24 after the bag is penetrated with a spike located at the end of the drip chamber 24 . Thereafter, fluid 22 flows through a fluid passage provided by a lumen of flexible, plastic fluid delivery tubing 26 to handheld electrosurgical device 30 .
- Pump 28 comprises a peristaltic pump and, more specifically, a rotary peristaltic pump.
- a rotary peristaltic pump With a rotary peristaltic pump, a portion of the fluid delivery tubing 26 is loaded into the pump 28 by raising and lower a pump head in a known manner. Fluid 22 is then conveyed within the fluid delivery tubing 26 by waves of contraction placed externally on the tubing 26 which are produced mechanically, typically by rotating pinch rollers which rotate on a drive shaft and intermittently compress the fluid delivery tubing 26 against an anvil support.
- pump 28 may comprise a linear peristaltic pump.
- fluid 22 is conveyed within the fluid delivery tubing 26 by waves of contraction placed externally on the tubing 26 which are produced mechanically, typically by a series of compression fingers or pads which sequentially squeeze the tubing 26 against a support.
- Peristaltic pumps are generally preferred, as the electro-mechanical force mechanism, here rollers driven by electric motor, does not make contact the fluid 22 , thus reducing the likelihood of inadvertent contamination.
- the fluid 22 is liquid saline solution, and even more particularly, normal (physiologic) saline solution.
- saline normal (physiologic) saline solution.
- other electrically conductive fluids may be used in accordance with the invention.
- fluid 22 may also be an electrically non-conductive fluid.
- a non-conductive fluid may not offer as many advantages as a conductive fluid, however, the use of a non-conductive fluid still provides certain advantages over the use of a dry electrode including, for example, reduced occurrence of tissue sticking to the electrode(s) of device 30 and cooling of the electrode(s) and/or tissue. Therefore, it is also within the scope of the invention to include the use of a non-conductive fluid, such as, for example, deionized water.
- electrosurgical device 30 is connected to electrosurgical unit 10 via a cable 34 which has a plurality of electrically insulated wire conductors 32 (shown in FIG. 5 ) and at least one plug 36 at the end thereof.
- the electrosurgical unit 10 provides radio-frequency (RF) energy via cable 34 to electrosurgical device 30 .
- Plug receptacle 38 of electrosurgical unit 10 receives the plug 36 of device 30 therein to electrically connect device 30 to the electrosurgical unit 10 .
- the fluid delivery tubing 26 may be provided as part of cable 34 and produced with the electrically insulated wires 32 via plastic co-extrusion.
- FIG. 2 An exemplary RF power output curve for electrosurgical unit 10 is shown in FIG. 2 .
- Impedance Z shown in units of ohms on the X-axis and RF output power P O is shown in units of watts on the Y-axis.
- the RF power is bipolar and set to 200 watts.
- the output power P O will remain constant with the set RF power P S as long as the impedance Z stays between the low impedance cut-off of 30 ohms and the high impedance cut-off of 250 ohms.
- Below an impedance Z of 30 ohms the output power P O will decrease as shown by the low impedance ramp. Above an impedance Z of 250 ohms, the output power P O will also decrease as shown by the high impedance ramp.
- Electrosurgical unit 10 has also been configured such that the speed of pump 28 , and therefore the throughput of fluid 22 expelled by the pump 28 , is predetermined based on two input variables, the RF power setting and the fluid flow rate setting.
- FIG. 3 there is shown a relationship of fluid flow rate Q in units of cubic centimetres per minute (cc/min) on the Y-axis, and the RF power setting P S in units of watts on the X-axis.
- the relationship has been engineered to inhibit undesirable effects such as tissue desiccation, electrode sticking, smoke production and char formation, while at the same time not providing a fluid flow rate Q at a corresponding RF power setting P S which is so great as to provide too much fluid 22 from device 30 , which may result in too much electrical dispersion and excess cooling at the electrode/tissue interface.
- electrosurgical unit 10 has been configured to increase the fluid flow rate Q linearly with an increasing RF power setting P S for each of three fluid flow rate settings of low, medium and high corresponding to Q L , Q M and Q H , respectively.
- electrosurgical unit 10 has been configured to decrease the fluid flow rate Q linearly with an decrease RF power setting P S for each of three fluid flow rate settings of low, medium and high corresponding to Q L , Q M and Q H , respectively.
- Electrosurgical unit 10 may be particularly configured for use with an electrosurgical device 30 which is a bipolar device. With a bipolar device, an alternating current (AC) electrical circuit is created between first and second electrical poles/electrodes of the device 30 .
- An exemplary bipolar electrosurgical device of the present invention which may be used in conjunction with electrosurgical unit 10 of the present invention is shown at reference character 30 a in FIG. 4 . While electrosurgical device 30 a of the present invention is described herein with reference to use with electrosurgical unit 10 , it should be understood that the description of the combination is for purposes of illustrating the system of the invention.
- electrosurgical device 30 a disclosed herein may be used with electrosurgical unit 10 , it may be plausible to use other electrosurgical devices with electrosurgical unit, or it may be plausible to use the electrosurgical device(s) disclosed herein with another electrosurgical unit.
- exemplary bipolar device 30 a comprises a proximal handle 40 comprising mating handle portions 40 a , 40 b .
- Handle 40 is preferably made of a sterilizable, rigid, non-conductive material, such as a plastic material (e.g., thermoplastic such as acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC)).
- a plastic material e.g., thermoplastic such as acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC)
- handle 40 is preferably configured slender, along with the rest of device 30 a , to facilitate a user of device 30 a to hold and manipulate device 30 a like a pen-type device.
- Device 30 a also includes a cable 34 which is connectable to electrosurgical unit 10 and flexible fluid delivery tubing 26 which is connectable to fluid source 20 , particularly via a spike located at the end of drip chamber 24 , which respectively provide RF energy and fluid 22 to the electrodes 100 , 102 .
- cable 34 of device 30 a comprises a plurality of insulated wires 42 connectable to electrosurgical unit 10 via three banana (male) plug connectors 44 .
- the banana plug connectors 44 are each assembled with wire conductors of insulated wires 42 within plug 36 in a known manner.
- Wire conductors of insulated wires 42 are connected distally to a handswitch assembly 46 , and thereafter wire conductors are connected to crimp terminals 48 which connect to a proximal portion of conductors 70 , 72 of shaft member 50 .
- Handswitch assembly 46 comprises a push button 52 which overlies a domed switch. Upon depression of button 52 , the domed switch forms a closed circuit which is sensed by electrosurgical unit 10 , which then provides RF power to the electrodes 100 , 102 .
- rigid shaft member 50 located distal to handle 40 , comprises a shaft member first body 60 and a shaft member second body 62 .
- Shaft member 50 extends distally from the handle 40 and supports electrodes 100 , 102 in rigid relation to the handle 40 .
- fluid delivery tubing 26 of device 30 a is connected within handle 40 to a proximal barbed connector portion 54 of shaft member 50 , which is defined by at least one of shaft member first body 60 and shaft member second body 62 .
- proximal barbed connector portion 54 of shaft member 50 , which is defined by at least one of shaft member first body 60 and shaft member second body 62 .
- the lumen of fluid delivery tubing 26 preferably interference (friction or press) fit over the outside diameter of barbed connector portion 54 to provide an interference fit and seal therebetween.
- shaft member first body 60 and shaft member second body 62 comprise two opposing, mating halves of shaft member 50 which may form a clamshell design.
- Shaft member first body 60 and shaft member second body 62 are joined together along a length of the shaft member 50 , from a proximal end 56 to a distal end 58 thereof.
- Shaft member first body 60 and shaft member second body 62 may particularly be made of a rigid plastic material such as thermoplastic acrylonitrile-butadiene-styrene (ABS) or polycarbonate (PC).
- a rigid plastic may be understood to be a plastic having a modulus of elasticity either in flexure or in tension greater than 700 MPA (100 kpsi) at 23° C. and 50% relative humidity when tested in accordance with ASTM methods D-747, D-790, D-638, or D-882.
- ASTM methods D-747, D-790, D-638, or D-882 this definition is not necessarily exhaustive, but merely inclusive.
- Shaft member first body 60 and shaft member second body 62 may be joined by thermoplastic welding, and more particularly ultrasonic welding. In this manner, a hermetic seal may be provided between shaft member first body 60 and shaft member second body 62 .
- Shaft member 50 includes a plurality of longitudinally oriented, tubular (enclosed), shaft member passages 64 , 66 , 82 and 84 , with each having a length defined by the shaft member first body 60 and the shaft member second body 62 .
- the passages 64 , 66 , 82 and 84 may be parallel and positioned to a side of one another. As shown, adjacent shaft member passages may be separated from one another by a common weld line or seam 65 which may hermetically seal the passages from 64 and 66 from 82 and 84.
- Outer (lateral) passages 64 , 66 of shaft member 50 more particularly comprise electrical passages which are parallel and isolated from one another, and which contain planar electrical conductors 70 , 72 .
- Electrical conductors 70 , 72 extend along the complete length of passages 64 , 66 , and extend from entrance apertures 74 , 76 , respectively, of passages 64 , 66 at a proximal end 56 of shaft member 50 , as well as extend from exit apertures 78 , 80 of passages 64 , 66 at a distal end 58 of shaft member 50 .
- electrical conductors 70 , 72 are made of metal, and may more particularly made of sheet metal. In this manner, conductors are rigid and may contribute to the overall stiffness of shaft member 50 .
- electrical conductors 70 , 72 are electrically coupled to wire conductors 32 within handle 40 whereby they may receive RF energy conducted through wire conductors 32 from electrosurgical unit 10 .
- electrical conductors are electrically coupled (via direct physical contact) to electrodes 100 , 102 , whereby they may conduct the RF energy from electrosurgical unit 10 to electrodes 100 , 102 .
- electrodes 100 , 102 are seated in distal end electrode receptacles 88 , 90 and electrical conductors 70 , 72 extend through apertures 78 , 80 within the receptacles 88 , 90 at the base thereof for the electrical conductors 70 , 72 to make contact with electrodes 100 , 102 .
- electrical conductors 70 , 72 are orientation sensitive and configured to inhibit improper installation within shaft member 50 . Furthermore, electrical conductors 70 , 72 and at least one of the shaft member first body 60 and a shaft member second body 62 have interconnecting mating features to position each electrical conductor 70 , 72 relative to at least one of the shaft member first body 60 and a shaft member second body 62 . As shown in FIG. 11 , the interconnecting mating feature of each electrical conductor 70 , 72 comprises a keyway 78 and the interconnecting mating feature of at least one of the shaft member first body 60 and shaft member second body 62 comprises a key 80 (shown with shaft member first body 60 ) configured to interconnect with the keyway 80 . In an alternative embodiment, the keyway 78 may be provided with at least one of the shaft member first body 60 and shaft member second body 62 and the key 80 may be provided with the electrical conductor 70 , 72 .
- inner (medial) passages 82 , 84 of shaft member 50 more particularly comprise fluid delivery passages.
- passages 82 , 84 may branch from a common proximal fluid delivery passage 86 which passes through shaft member barbed connector portion 54 and which is in fluid communication/connected with the lumen of fluid delivery tubing 26 .
- passages 82 , 84 may be in fluid communication with fluid delivery passages 104 , 106 which pass through electrodes 100 , 102 and terminate in exit apertures 108 , 110 .
- apertures 108 , 110 are at least partially defined by electrodes 100 , 102 , respectively, and more particularly, are completely defined by electrodes 100 , 102 , respectively.
- exit apertures 108 , 110 provide fluid outlets or exits configured to provide fluid 22 therefrom directly onto electrodes 100 , 102 .
- exit apertures 108 , 110 are proximal to a distal end of electrodes 100 , 102 , as well as located on lateral portions of electrodes 100 , 102 .
- fluid 22 from fluid source 20 is communicated through a tubular passage provided by lumen of fluid delivery tubing 26 , after which it flows through tubular fluid delivery passage 86 and tubular fluid delivery passages 82 , 84 of shaft member 50 , and then to tubular fluid delivery passages 104 , 106 of electrodes 100 , 102 .
- fluid 22 may be expelled from fluid outlets 108 , 110 onto electrodes 100 , 102 .
- a female proximal connector portion 92 , 94 of each electrode receptacle 88 , 90 may be configured to form an interference (friction or press) fit with a male proximal connector portion 112 , 114 of each electrode 100 , 102 .
- the female connector portion 92 , 94 of each electrode receptacle 88 , 90 may comprise a cylindrical recess and the male connector portion 112 , 114 of each electrode 100 , 102 may comprise a barbed connector portion 120 , 122 configured to fit within the cylindrical recess.
- the first electrode fluid delivery passage 104 may pass through the first electrode connector portion 112 configured to connect the first electrode 100 to the shaft member 50
- the second electrode fluid delivery passage 106 may pass through the second electrode connector portion 114 configured to connect the second electrode 102 to the shaft member 50 .
- electrodes 100 , 102 may be configured to slide across a tissue surface in a presence of the RF energy from electrosurgical unit 10 and fluid 22 from the fluid source 20 .
- electrodes 100 , 102 may be laterally and spatially separated (by empty space), and configured as mirror images in size and shape with a blunt distal end surface 116 , 118 devoid of edges (to provide a uniform current density and treat tissue without necessarily cutting).
- each distal end surface 116 , 118 of electrodes 100 , 102 may comprise a spherical surface, and more particularly comprise a hemispherical surface with an arc of 180 degrees.
- Electrodes 100 , 102 may particularly comprise an electrically conductive metal, such as stainless steel. Other suitable materials may include titanium, gold, silver and platinum.
- electrical conductors 70 , 72 are first installed and positioned with shaft member first body 60 . Thereafter, shaft member first body 60 and shaft member second body 62 may be joined by ultrasonic welding. Thereafter, electrodes 100 , 102 may be joined to shaft member 50 by inserting male connector portions 112 , 114 of electrodes 100 , 102 into female connector portions 92 , 94 of electrode receptacles 88 , 90 of shaft member 50 . Prior to inserting male connector portions 112 , 114 of electrodes 100 , 102 into female connector portions 92 , 94 , electrodes 100 , 102 may be heated.
- electrodes 100 , 102 may heat and soften the female connector portions 92 , 94 of electrode receptacles 88 , 90 during insertion thereof.
- the insertion force may be reduced, and the plastic material defining female connector portions 92 , 94 may flow to better join/grasp with the barbs and adhesively bond, as well as mechanically bond, to electrodes 100 , 102 .
- a hermetic seal may be provided between electrodes 100 , 102 and electrode receptacles 88 , 90 .
- electrodes 100 , 102 may be ultrasonically welded to electrode receptacles 88 , 90 of shaft member 50 .
- electrodes 100 , 102 are joined to shaft member 50 by inserting male connector portions 112 , 114 of electrodes 100 , 102 into female connector portions 92 , 94 of electrode receptacles 88 , 90 of shaft member 50 , a distal portion 124 , 126 of electrical conductors 70 , 72 may be inserted into receptacles 128 , 130 of electrodes 100 , 102 to establish physical contact therewith for electrical communication.
- Electrodes 100 , 102 are connected to electrosurgical unit 10 to provide RF power and form an alternating current electrical field in tissue 200 located between electrodes 100 and 102 .
- the electrodes 100 , 102 alternate polarity between positive and negative charges with current flow from the positive to negative charge.
- heating of the tissue 200 is performed by electrical resistance heating.
- Fluid 22 in addition to providing an electrical coupling between the device 30 a and tissue 200 , lubricates surface 202 of tissue 200 and facilitates the movement of electrodes 100 , 102 across surface 202 of tissue 200 .
- electrodes 100 , 102 typically slide across the surface 202 of tissue 200 .
- the user of device 30 a slides electrodes 100 , 102 across surface 202 of tissue 200 back and forth with a painting motion while using fluid 22 as, among other things, a lubricating coating.
- the thickness of the fluid 22 between the distal end surface of electrodes 100 , 102 and surface 202 of tissue 200 at the outer edge of couplings 204 , 206 is in the range between and including about 0.05 mm to 1.5 mm.
- the distal end tip of electrodes 100 , 102 may contact surface 202 of tissue 200 without any fluid 22 in between.
- fluid couplings 204 , 206 comprise discrete, localized webs and more specifically comprise triangular shaped webs providing fluid 24 between surface 202 of tissue 200 and electrodes 100 , 102 .
- fluid 22 is expelled from fluid outlet openings 108 , 110 around and on surfaces 116 , 118 of electrodes 100 , 102 and onto the surface 202 of the tissue 200 via couplings 204 , 206 .
- RF electrical energy shown by electrical field lines 208 , is provided to tissue 200 at tissue surface 202 and below tissue surface 202 into tissue 200 through fluid couplings 204 , 206 .
- Device 30 a disclosed herein may be particularly useful as non-coaptive tissue sealer in providing hemostasis during surgery.
- grasping of the tissue is not necessary to shrink, coagulate and seal tissue against blood loss, for example, by shrinking collagen and associated lumens of blood vessels (e.g., arteries, veins) to provided the desired hemostasis of the tissue.
- the control system of the electrosurgical unit 10 is not necessarily dependent on tissue feedback such as temperature or impedance to operate.
- the control system of electrosurgical unit 10 may be open loop with respect to the tissue which simplifies use.
- Device 30 a disclosed herein may be particularly useful to surgeons to achieve hemostasis after dissecting through soft tissue, as part of hip or knee arthroplasty.
- the tissue treating portions can be painted over the raw, oozing surface 202 of tissue 200 to seal the tissue 200 against bleeding, or focused on individual larger bleeding vessels to stop vessel bleeding.
- device 30 a is also useful to stop bleeding from the surface of cut bone, or osseous, tissue as part of any orthopaedic procedure that requires bone to be cut.
- Device 30 a may be particularly useful for use during orthopedic knee, hip, shoulder and spine procedures. Additional discussion concerning such procedures may be found in U.S. Publication No. 2006/0149225, published Jul. 6, 2006, and U.S. Publication No. 2005/0090816, published Apr. 28, 2005, which are assigned to the assignee of the present invention and are hereby incorporated by reference in there entirety to the extent they are consistent.
- device 30 a of the present invention inhibit such undesirable effects of tissue desiccation, electrode sticking, char formation and smoke generation, and thus do not suffer from the same drawbacks as prior art dry tip electrosurgical devices.
- the use of the disclosed devices can result in significantly lower blood loss during surgical procedures. Such a reduction in blood loss can reduce or eliminate the need for blood transfusions, and thus the cost and negative clinical consequences associated with blood transfusions, such as prolonged hospitalization.
- device 30 a may only have a single electrode 100 and comprise a monopolar device.
Abstract
This invention provides a fluid-assisted electrosurgical device to treat tissue in a presence of radio frequency energy and a fluid provided from the device. The device comprises a handle, a rigid shaft member distal to the handle, and at least one electrode distal to the shaft member. The shaft member comprises a shaft member first body and a shaft member second body joined together along a length of the shaft member. The shaft member further comprises a plurality of longitudinally oriented shaft member passages, with each of the passages having a length defined by the shaft member first body and the shaft member second body.
Description
- This invention relates generally to the field of medical systems, devices and methods for use upon a body during surgery. More particularly, the invention relates to electrosurgical systems, devices and methods for use upon tissues of a human body during surgery, particularly open surgery and minimally invasive surgery such as laparoscopic surgery.
- Dry-tip electrosurgical devices (e.g. monopolar pencil) have been known to cause tissue desiccation, tissue sticking to the electrodes, tissue perforation, char formation and smoke generation. More recently, fluid-assisted electrosurgical devices have been developed which use saline to inhibit such undesirable effects, as well as cool the tissue being treated and electrically couple the device to the tissue. The present invention provides a further improvement to fluid-assisted electrosurgical devices by providing an improved construction which better promotes the manufacture thereof.
- This invention provides a fluid-assisted electrosurgical device to treat tissue in a presence of radio frequency energy and a fluid provided from the device. In one embodiment, the device comprises a handle, a rigid shaft member distal to the handle, and at least one electrode distal to the shaft member. The shaft member comprises a shaft member first body and a shaft member second body joined together along a length of the shaft member. The shaft member further comprises a plurality of longitudinally oriented shaft member passages. The passages may be parallel and positioned along side one another, and have a length defined by the shaft member first body and the shaft member second body. The shaft member first body and the shaft member second body may be made of a plastic material.
- In certain embodiments, the plurality of shaft member passages includes an electrical passage containing an electrical conductor, with the electrical conductor electrically coupled to the electrode. The electrical conductor may extend from a proximal end of the shaft member to a distal end of the shaft member where it may be in direct contact with the electrode. The electrical conductor and the electrode may contact one another within a receptacle for the electrode at a distal end of the shaft member. The electrical conductor may be made of sheet metal.
- In certain embodiments, the electrical conductor and at least one of the shaft member first body and the shaft member second body may have interconnecting mating features to position the electrical conductor relative to at least one of the shaft member first body and a shaft member second body. The interconnecting mating features may comprise a keyway and a key configured to interconnect with the keyway. In one embodiment, the electrical conductor interconnecting mating feature may comprise the keyway, and the interconnecting mating feature of at least one of the shaft member first body and the shaft member second body may comprise the key configured to interconnect with the keyway. In an alternative embodiment, the keyway may be provided with at least one of the shaft member first body and shaft member second body and the key may be provided with the electrical conductor.
- In other embodiments, the plurality of shaft member passages may include a fluid delivery passage, and the fluid delivery passage may be in fluid communication with a fluid outlet configured to provide fluid to the electrode. The fluid outlet may be at least partially defined by the electrode. The shaft member fluid delivery passage may pass through a shaft member connector portion configured to connect the shaft member fluid delivery passage with fluid delivery tubing within the handle. The shaft member connector portion may be defined by at least one of the shaft member first body and the shaft member second body, and may more particularly comprise a barbed connector portion.
- In still other embodiments, the device may comprise a first electrode and a second electrode, and the plurality of shaft member passages may include a first electrical passage and a second electrical passage which are isolated from one another. The first electrical passage may contain a first electrical conductor which is electrically coupled to the first electrode, and the second electrical passage may contain a second electrical conductor which is electrically coupled to the second electrode.
- In other embodiments, a first fluid outlet may provide fluid to the first electrode and second fluid outlet may provide fluid to the second electrode. The shaft member fluid delivery passage may include a first branch and a second branch. The shaft member fluid delivery passage first branch may be in fluid communication with the first fluid outlet configured to provide fluid to the first electrode, and the shaft member fluid delivery passage second branch may be in fluid communication with the second fluid outlet configured to provide fluid to the second electrode. The first fluid outlet may be at least partially defined by the first electrode, and the second fluid outlet may be at least partially defined by the second electrode.
- In other embodiments, the first electrode may include a first electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage first branch, and the second electrode may include a second electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage second branch.
- In other embodiments, the first electrode fluid delivery passage may pass through a first electrode connector portion configured to connect the first electrode to the shaft member, and the second electrode fluid delivery passage may pass through a second electrode connector portion configured to connect the second electrode to the shaft member. The first electrode connector portion may comprise a barbed connector portion, and the second electrode connector portion may also comprise a barbed connector portion.
- In other embodiments, the shaft member first body and the shaft member second body may be welded together. The plurality of longitudinally oriented shaft member passages may be separated from one another along a common weld line or seam.
-
FIG. 1 is a front view of one embodiment of a system of the present invention having an electrosurgical unit in combination with a fluid source and handheld electrosurgical device; -
FIG. 2 is a graph of the RF power output versus impedance for the electrosurgical unit ofFIG. 1 ; -
FIG. 3 is graph showing a relationship of fluid flow rate Q in units of cubic centimetres per minute (cc/min) on the Y-axis, and the RF power setting PS in units of watts on the X-axis; -
FIG. 4 is a perspective view of an electrosurgical device according to the present invention; -
FIG. 5 is an exploded perspective view of the device ofFIG. 4 ; -
FIG. 6 is a close-up front perspective view of the shaft member of the device ofFIG. 4 ; -
FIG. 7 is a close-up rear perspective view of the shaft member of the device ofFIG. 4 ; -
FIG. 8 is an exploded perspective view of the shaft member ofFIGS. 6 and 7 ; -
FIG. 9 is a close-up cross-sectional view of the shaft member ofFIGS. 6 and 7 taken along line 9-9 ofFIG. 6 ; -
FIG. 10 is a close-up cross-sectional view of the shaft member ofFIGS. 6 and 7 taken along line 10-10 ofFIG. 6 ; -
FIG. 11 is a cross-sectional view of the shaft member ofFIGS. 6 and 7 taken along a length ofconductor 70; and -
FIG. 12 is a close-up cross-sectional view of a tip portion of the device ofFIG. 4 with an exemplary fluid coupling to a tissue surface of tissue; - Throughout the description, like reference numerals and letters indicate corresponding structure throughout the several views. Also, any particular feature(s) of a particular exemplary embodiment may be equally applied to any other exemplary embodiment(s) of this specification as suitable. In other words, features between the various exemplary embodiments described herein are interchangeable as suitable, and not exclusive. From the specification, it should be clear that any use of the terms “distal” and “proximal” are made in reference from the user of the device, and not the patient.
- The invention provides systems, devices and methods for treating tissue at a tissue treatment site during an electrosurgical procedure. This is particularly useful for procedures where it is desirable to shrink, coagulate and seal tissue against blood loss, for example, by shrinking lumens of blood vessels (e.g., arteries, veins).
- The invention will now be discussed with reference to the figures, with
FIG. 1 showing a front view of one embodiment of asystem 2 of the present invention having anelectrosurgical unit 10 in combination with afluid source 20 and a handheldelectrosurgical device 30.FIG. 1 further shows amovable cart 12 having asupport member 14 which carries aplatform 16 comprising a pedestal table to provide a flat, stable surface for location of theelectrosurgical unit 10. As showncart 2 further comprises a fluidsource carrying pole 18 with a cross support for carryingfluid source 20. - As shown in
FIG. 1 ,fluid source 20 comprises a bag of fluid from which afluid 22 flows through adrip chamber 24 after the bag is penetrated with a spike located at the end of thedrip chamber 24. Thereafter,fluid 22 flows through a fluid passage provided by a lumen of flexible, plasticfluid delivery tubing 26 to handheldelectrosurgical device 30. - As shown in
FIG. 1 , thefluid delivery tubing 26 passes through pump 28. Pump 28 comprises a peristaltic pump and, more specifically, a rotary peristaltic pump. With a rotary peristaltic pump, a portion of thefluid delivery tubing 26 is loaded into the pump 28 by raising and lower a pump head in a known manner.Fluid 22 is then conveyed within thefluid delivery tubing 26 by waves of contraction placed externally on thetubing 26 which are produced mechanically, typically by rotating pinch rollers which rotate on a drive shaft and intermittently compress thefluid delivery tubing 26 against an anvil support. Alternatively, pump 28 may comprise a linear peristaltic pump. With a linear peristaltic pump,fluid 22 is conveyed within thefluid delivery tubing 26 by waves of contraction placed externally on thetubing 26 which are produced mechanically, typically by a series of compression fingers or pads which sequentially squeeze thetubing 26 against a support. Peristaltic pumps are generally preferred, as the electro-mechanical force mechanism, here rollers driven by electric motor, does not make contact the fluid 22, thus reducing the likelihood of inadvertent contamination. - In one embodiment, the fluid 22 is liquid saline solution, and even more particularly, normal (physiologic) saline solution. However, although the description herein may make reference to saline as the fluid 22, other electrically conductive fluids may be used in accordance with the invention.
- In addition to the use of an electrically conductive fluid, as will become more apparent with further reading of this specification, fluid 22 may also be an electrically non-conductive fluid. The use of a non-conductive fluid may not offer as many advantages as a conductive fluid, however, the use of a non-conductive fluid still provides certain advantages over the use of a dry electrode including, for example, reduced occurrence of tissue sticking to the electrode(s) of
device 30 and cooling of the electrode(s) and/or tissue. Therefore, it is also within the scope of the invention to include the use of a non-conductive fluid, such as, for example, deionized water. - As shown in
FIG. 1 ,electrosurgical device 30 is connected toelectrosurgical unit 10 via acable 34 which has a plurality of electrically insulated wire conductors 32 (shown inFIG. 5 ) and at least oneplug 36 at the end thereof. Theelectrosurgical unit 10 provides radio-frequency (RF) energy viacable 34 toelectrosurgical device 30. Plugreceptacle 38 ofelectrosurgical unit 10 receives theplug 36 ofdevice 30 therein to electrically connectdevice 30 to theelectrosurgical unit 10. Thefluid delivery tubing 26 may be provided as part ofcable 34 and produced with the electrically insulatedwires 32 via plastic co-extrusion. - An exemplary RF power output curve for
electrosurgical unit 10 is shown inFIG. 2 . Impedance Z, shown in units of ohms on the X-axis and RF output power PO is shown in units of watts on the Y-axis. In the illustrated embodiment, the RF power is bipolar and set to 200 watts. As shown in the figure, for an RF power setting PS of 200 watts, the output power PO will remain constant with the set RF power PS as long as the impedance Z stays between the low impedance cut-off of 30 ohms and the high impedance cut-off of 250 ohms. Below an impedance Z of 30 ohms, the output power PO will decrease as shown by the low impedance ramp. Above an impedance Z of 250 ohms, the output power PO will also decrease as shown by the high impedance ramp. -
Electrosurgical unit 10 has also been configured such that the speed of pump 28, and therefore the throughput offluid 22 expelled by the pump 28, is predetermined based on two input variables, the RF power setting and the fluid flow rate setting. InFIG. 3 , there is shown a relationship of fluid flow rate Q in units of cubic centimetres per minute (cc/min) on the Y-axis, and the RF power setting PS in units of watts on the X-axis. The relationship has been engineered to inhibit undesirable effects such as tissue desiccation, electrode sticking, smoke production and char formation, while at the same time not providing a fluid flow rate Q at a corresponding RF power setting PS which is so great as to provide too much fluid 22 fromdevice 30, which may result in too much electrical dispersion and excess cooling at the electrode/tissue interface. - As shown,
electrosurgical unit 10 has been configured to increase the fluid flow rate Q linearly with an increasing RF power setting PS for each of three fluid flow rate settings of low, medium and high corresponding to QL, QM and QH, respectively. Conversely,electrosurgical unit 10 has been configured to decrease the fluid flow rate Q linearly with an decrease RF power setting PS for each of three fluid flow rate settings of low, medium and high corresponding to QL, QM and QH, respectively. -
Electrosurgical unit 10 may be particularly configured for use with anelectrosurgical device 30 which is a bipolar device. With a bipolar device, an alternating current (AC) electrical circuit is created between first and second electrical poles/electrodes of thedevice 30. An exemplary bipolar electrosurgical device of the present invention which may be used in conjunction withelectrosurgical unit 10 of the present invention is shown atreference character 30 a inFIG. 4 . Whileelectrosurgical device 30 a of the present invention is described herein with reference to use withelectrosurgical unit 10, it should be understood that the description of the combination is for purposes of illustrating the system of the invention. Consequently, it should be understood that whileelectrosurgical device 30 a disclosed herein may be used withelectrosurgical unit 10, it may be plausible to use other electrosurgical devices with electrosurgical unit, or it may be plausible to use the electrosurgical device(s) disclosed herein with another electrosurgical unit. - As shown in
FIG. 4 , exemplarybipolar device 30 a comprises aproximal handle 40 comprisingmating handle portions 40 a, 40 b.Handle 40 is preferably made of a sterilizable, rigid, non-conductive material, such as a plastic material (e.g., thermoplastic such as acrylonitrile-butadiene-styrene (ABS), polycarbonate (PC)). Also, handle 40 is preferably configured slender, along with the rest ofdevice 30 a, to facilitate a user ofdevice 30 a to hold and manipulatedevice 30 a like a pen-type device.Device 30 a also includes acable 34 which is connectable toelectrosurgical unit 10 and flexiblefluid delivery tubing 26 which is connectable tofluid source 20, particularly via a spike located at the end ofdrip chamber 24, which respectively provide RF energy andfluid 22 to theelectrodes - As shown in
FIG. 5 ,cable 34 ofdevice 30 a comprises a plurality of insulated wires 42 connectable toelectrosurgical unit 10 via three banana (male)plug connectors 44. Thebanana plug connectors 44 are each assembled with wire conductors of insulated wires 42 withinplug 36 in a known manner. Wire conductors of insulated wires 42 are connected distally to ahandswitch assembly 46, and thereafter wire conductors are connected to crimpterminals 48 which connect to a proximal portion ofconductors shaft member 50. -
Handswitch assembly 46 comprises apush button 52 which overlies a domed switch. Upon depression ofbutton 52, the domed switch forms a closed circuit which is sensed byelectrosurgical unit 10, which then provides RF power to theelectrodes - Referring to
FIGS. 6 and 7 ,rigid shaft member 50, located distal to handle 40, comprises a shaft memberfirst body 60 and a shaft membersecond body 62.Shaft member 50 extends distally from thehandle 40 and supportselectrodes handle 40. - At a
proximal end 56 ofshaft member 50,fluid delivery tubing 26 ofdevice 30 a is connected withinhandle 40 to a proximal barbed connector portion 54 ofshaft member 50, which is defined by at least one of shaft memberfirst body 60 and shaft membersecond body 62. To connectfluid delivery tubing 26 to barbed connector portion 54, the lumen offluid delivery tubing 26 preferably interference (friction or press) fit over the outside diameter of barbed connector portion 54 to provide an interference fit and seal therebetween. - As shown in
FIGS. 8-10 , shaft memberfirst body 60 and shaft membersecond body 62 comprise two opposing, mating halves ofshaft member 50 which may form a clamshell design. Shaft memberfirst body 60 and shaft membersecond body 62 are joined together along a length of theshaft member 50, from aproximal end 56 to adistal end 58 thereof. Shaft memberfirst body 60 and shaft membersecond body 62 may particularly be made of a rigid plastic material such as thermoplastic acrylonitrile-butadiene-styrene (ABS) or polycarbonate (PC). As used herein, a rigid plastic may be understood to be a plastic having a modulus of elasticity either in flexure or in tension greater than 700 MPA (100 kpsi) at 23° C. and 50% relative humidity when tested in accordance with ASTM methods D-747, D-790, D-638, or D-882. However, this definition is not necessarily exhaustive, but merely inclusive. Shaft memberfirst body 60 and shaft membersecond body 62 may be joined by thermoplastic welding, and more particularly ultrasonic welding. In this manner, a hermetic seal may be provided between shaft memberfirst body 60 and shaft membersecond body 62. -
Shaft member 50 includes a plurality of longitudinally oriented, tubular (enclosed),shaft member passages first body 60 and the shaft membersecond body 62. Thepassages seam 65 which may hermetically seal the passages from 64 and 66 from 82 and 84. - Outer (lateral)
passages shaft member 50 more particularly comprise electrical passages which are parallel and isolated from one another, and which contain planarelectrical conductors Electrical conductors passages entrance apertures passages proximal end 56 ofshaft member 50, as well as extend fromexit apertures passages distal end 58 ofshaft member 50. In a particular embodiment,electrical conductors shaft member 50. - Also at a
proximal end 56 ofshaft member 50,electrical conductors conductors 32 withinhandle 40 whereby they may receive RF energy conducted throughwire conductors 32 fromelectrosurgical unit 10. At thedistal end 58 ofshaft member 50, electrical conductors are electrically coupled (via direct physical contact) toelectrodes electrosurgical unit 10 toelectrodes electrodes end electrode receptacles electrical conductors apertures receptacles electrical conductors electrodes - By design,
electrical conductors shaft member 50. Furthermore,electrical conductors first body 60 and a shaft membersecond body 62 have interconnecting mating features to position eachelectrical conductor first body 60 and a shaft membersecond body 62. As shown inFIG. 11 , the interconnecting mating feature of eachelectrical conductor keyway 78 and the interconnecting mating feature of at least one of the shaft memberfirst body 60 and shaft membersecond body 62 comprises a key 80 (shown with shaft member first body 60) configured to interconnect with thekeyway 80. In an alternative embodiment, thekeyway 78 may be provided with at least one of the shaft memberfirst body 60 and shaft membersecond body 62 and the key 80 may be provided with theelectrical conductor - Returning to
FIGS. 8-10 , inner (medial)passages shaft member 50 more particularly comprise fluid delivery passages. At theproximal end 56 ofshaft member 50,passages fluid delivery passage 86 which passes through shaft member barbed connector portion 54 and which is in fluid communication/connected with the lumen offluid delivery tubing 26. - At the
distal end 58 ofshaft member 50,passages fluid delivery passages electrodes exit apertures 108, 110. As shown,apertures 108, 110 are at least partially defined byelectrodes electrodes apertures 108, 110 provide fluid outlets or exits configured to provide fluid 22 therefrom directly ontoelectrodes apertures 108, 110 are proximal to a distal end ofelectrodes electrodes - Thus, during use of
device 30 a, fluid 22 fromfluid source 20 is communicated through a tubular passage provided by lumen offluid delivery tubing 26, after which it flows through tubularfluid delivery passage 86 and tubularfluid delivery passages shaft member 50, and then to tubularfluid delivery passages electrodes fluid delivery passages electrodes fluid outlets 108, 110 ontoelectrodes - As shown in
FIG. 10 , a femaleproximal connector portion 92, 94 of eachelectrode receptacle proximal connector portion electrode female connector portion 92, 94 of eachelectrode receptacle male connector portion electrode barbed connector portion 120, 122 configured to fit within the cylindrical recess. In order to increase the efficiency of the design, the first electrodefluid delivery passage 104 may pass through the firstelectrode connector portion 112 configured to connect thefirst electrode 100 to theshaft member 50, and the second electrodefluid delivery passage 106 may pass through the secondelectrode connector portion 114 configured to connect thesecond electrode 102 to theshaft member 50. - In the illustrated embodiment,
electrodes electrosurgical unit 10 and fluid 22 from thefluid source 20. As shown,electrodes distal end surface distal end surface electrodes Electrodes - During the
manufacture device 30 a,electrical conductors first body 60. Thereafter, shaft memberfirst body 60 and shaft membersecond body 62 may be joined by ultrasonic welding. Thereafter,electrodes shaft member 50 by insertingmale connector portions electrodes female connector portions 92, 94 ofelectrode receptacles shaft member 50. Prior to insertingmale connector portions electrodes female connector portions 92, 94,electrodes electrodes female connector portions 92, 94 ofelectrode receptacles female connector portions 92, 94 may flow to better join/grasp with the barbs and adhesively bond, as well as mechanically bond, toelectrodes electrodes electrode receptacles electrodes electrode receptacles shaft member 50. - At the
same time electrodes shaft member 50 by insertingmale connector portions electrodes female connector portions 92, 94 ofelectrode receptacles shaft member 50, adistal portion 124, 126 ofelectrical conductors receptacles 128, 130 ofelectrodes - As shown in
FIG. 12 , one way in whichdevice 30 a may be used is with the longitudinal axis ofelectrodes spherical surfaces electrodes adjacent tissue surface 202 oftissue 200.Electrodes electrosurgical unit 10 to provide RF power and form an alternating current electrical field intissue 200 located betweenelectrodes electrodes tissue 200 is performed by electrical resistance heating. -
Fluid 22, in addition to providing an electrical coupling between thedevice 30 a andtissue 200, lubricatessurface 202 oftissue 200 and facilitates the movement ofelectrodes surface 202 oftissue 200. During movement ofelectrodes electrodes surface 202 oftissue 200. Typically the user ofdevice 30 aslides electrodes surface 202 oftissue 200 back and forth with a painting motion while usingfluid 22 as, among other things, a lubricating coating. Preferably the thickness of the fluid 22 between the distal end surface ofelectrodes surface 202 oftissue 200 at the outer edge ofcouplings 204, 206 is in the range between and including about 0.05 mm to 1.5 mm. Also, in certain embodiments, the distal end tip ofelectrodes surface 202 oftissue 200 without any fluid 22 in between. - As shown in
FIG. 12 ,fluid couplings 204, 206 comprise discrete, localized webs and more specifically comprise triangular shapedwebs providing fluid 24 betweensurface 202 oftissue 200 andelectrodes electrosurgical device 30 aplaces electrodes electrodes surface 202 of thetissue 200, fluid 22 is expelled fromfluid outlet openings 108, 110 around and onsurfaces electrodes surface 202 of thetissue 200 viacouplings 204, 206. At the same time, RF electrical energy, shown by electrical field lines 208, is provided totissue 200 attissue surface 202 and belowtissue surface 202 intotissue 200 throughfluid couplings 204, 206. -
Device 30 a disclosed herein may be particularly useful as non-coaptive tissue sealer in providing hemostasis during surgery. In other words, grasping of the tissue is not necessary to shrink, coagulate and seal tissue against blood loss, for example, by shrinking collagen and associated lumens of blood vessels (e.g., arteries, veins) to provided the desired hemostasis of the tissue. Furthermore, the control system of theelectrosurgical unit 10 is not necessarily dependent on tissue feedback such as temperature or impedance to operate. Thus, the control system ofelectrosurgical unit 10 may be open loop with respect to the tissue which simplifies use. -
Device 30 a disclosed herein may be particularly useful to surgeons to achieve hemostasis after dissecting through soft tissue, as part of hip or knee arthroplasty. The tissue treating portions can be painted over the raw, oozingsurface 202 oftissue 200 to seal thetissue 200 against bleeding, or focused on individual larger bleeding vessels to stop vessel bleeding. As part of the same or different procedure,device 30 a is also useful to stop bleeding from the surface of cut bone, or osseous, tissue as part of any orthopaedic procedure that requires bone to be cut.Device 30 a may be particularly useful for use during orthopedic knee, hip, shoulder and spine procedures. Additional discussion concerning such procedures may be found in U.S. Publication No. 2006/0149225, published Jul. 6, 2006, and U.S. Publication No. 2005/0090816, published Apr. 28, 2005, which are assigned to the assignee of the present invention and are hereby incorporated by reference in there entirety to the extent they are consistent. - As established above,
device 30 a of the present invention inhibit such undesirable effects of tissue desiccation, electrode sticking, char formation and smoke generation, and thus do not suffer from the same drawbacks as prior art dry tip electrosurgical devices. The use of the disclosed devices can result in significantly lower blood loss during surgical procedures. Such a reduction in blood loss can reduce or eliminate the need for blood transfusions, and thus the cost and negative clinical consequences associated with blood transfusions, such as prolonged hospitalization. - In an alternative embodiment,
device 30 a may only have asingle electrode 100 and comprise a monopolar device. - While a preferred embodiment of the present invention has been described, it should be understood that various changes, adaptations and modifications can be made therein without departing from the spirit of the invention and the scope of the appended claims. The scope of the invention should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims along with their full scope of equivalents. Furthermore, it should be understood that the appended claims do not necessarily comprise the broadest scope of the invention which the Applicant is entitled to claim, or the only manner(s) in which the invention may be claimed, or that all recited features are necessary.
- All publications and patent documents cited in this application are incorporated by reference in their entirety for all purposes to the extent they are consistent.
Claims (23)
1. An electrosurgical device comprising:
a handle;
a rigid shaft member distal to the handle, the shaft member comprising a shaft member first body and a shaft member second body, the shaft member first body and the shaft member second body joined together along a length of the shaft member;
the shaft member including a plurality of longitudinally oriented shaft member passages, each of the passages having a length defined by the shaft member first body and the shaft member second body; and
at least one electrode distal to the shaft member.
2. The device of claim 1 wherein:
the plurality of shaft member passages includes an electrical passage containing an electrical conductor; and
the electrical conductor is electrically coupled to the at least one electrode.
3. The device of claim 2 wherein:
the electrical conductor extends from a proximal end of the shaft member to a distal end of the shaft member and into contact with the at least one electrode.
4. The device of claim 3 wherein:
the electrical conductor and the at least one electrode contact one another within a receptacle for the electrode at a distal end of the shaft member.
5. The device of claim 2 wherein:
the electrical conductor and at least one of the shaft member first body and the shaft member second body have interconnecting mating features to position the electrical conductor relative to at least one of the shaft member first body and a shaft member second body.
6. The device of claim 5 wherein:
the interconnecting mating features comprises a keyway and a key configured to interconnect with the keyway.
7. The device of claim 2 wherein:
the electrical conductor is made of sheet metal.
8. The device of claim 1 wherein:
the at least one electrode comprises a first electrode and a second electrode;
the plurality of shaft member passages includes a first electrical passage and a second electrical passage;
the first electrical passage contains a first electrical conductor which is electrically coupled to the first electrode; and
a second electrical passage contains a second electrical conductor which is electrically coupled to the second electrode.
9. The device of claim 8 wherein:
the first electrical passage is isolated from the second electrical passage.
10. The device of claim 1 wherein:
the plurality of shaft member passages includes a fluid delivery passage; and
the fluid delivery passage is in fluid communication with at least one fluid outlet configured to provide fluid to the at least one electrode.
11. The device of claim 10 wherein:
the at least one fluid outlet is at least partially defined by the at least one electrode.
12. The device of claim 10 wherein:
the shaft member fluid delivery passage passes through a shaft member connector portion configured to connect the shaft member fluid delivery passage with fluid delivery tubing within the handle; and
the shaft member connector portion is defined by at least one of the shaft member first body and the shaft member second body.
13. The device of claim 12 wherein:
the shaft member connector portion comprises a barbed connector portion.
14. The device of claim 10 wherein:
the at least one electrode comprises a first electrode and a second electrode;
the at least one fluid outlet configured to provide fluid to the at least one electrode comprises a first fluid outlet configured to provide fluid to the first electrode and second fluid outlet configured to provide fluid to the second electrode;
the shaft member fluid delivery passage includes a first branch and a second branch;
the shaft member fluid delivery passage first branch is in fluid communication with the first fluid outlet configured to provide fluid to the first electrode; and
the shaft member fluid delivery passage second branch is in fluid communication with the second fluid outlet configured to provide fluid to the second electrode.
15. The device of claim 14 wherein:
the first fluid outlet is at least partially defined by the first electrode; and
the second fluid outlet is at least partially defined by the second electrode.
16. The device of claim 14 wherein:
the first electrode includes a first electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage first branch; and
the second electrode includes a second electrode fluid delivery passage in fluid communication with the shaft member fluid delivery passage second branch.
17. The device of claim 14 wherein:
the first electrode fluid delivery passage passes through a first electrode connector portion configured to connect the first electrode to the shaft member; and
the second electrode fluid delivery passage passes through a second electrode connector portion configured to connect the second electrode to the shaft member.
18. The device of claim 14 wherein:
the first electrode connector portion comprises a barbed connector portion; and
the second electrode connector portion comprises a barbed connector portion.
19. The device of claim 1 wherein:
the shaft member first body and the shaft member second body are joined together by a weld line.
20. The device of claim 19 wherein:
the plurality of longitudinally oriented shaft member passages are separated from one another along a common weld line.
21. The device of claim 1 wherein:
the plurality of longitudinally oriented shaft member passages are along side one another.
e
22. The device of claim 1 wherein:
the plurality of longitudinally oriented shaft member passages are parallel.
23. The device of claim 1 wherein:
the shaft member first body is made of a thermoplastic material; and
the shaft member second body is made of a thermoplastic material.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/790,309 US20110295249A1 (en) | 2010-05-28 | 2010-05-28 | Fluid-Assisted Electrosurgical Devices, and Methods of Manufacture Thereof |
EP11723847.7A EP2575658A1 (en) | 2010-05-28 | 2011-05-26 | Fluid- assisted electrosurgical devices, and methods of manufacture thereof |
PCT/US2011/038162 WO2011150222A1 (en) | 2010-05-28 | 2011-05-26 | Fluid- assisted electrosurgical devices, and methods of manufacture thereof |
CN2011800262846A CN103037794A (en) | 2010-05-28 | 2011-05-26 | Fluid- assisted electrosurgical devices, and methods of manufacture thereof |
CA2795536A CA2795536A1 (en) | 2010-05-28 | 2011-05-26 | Fluid-assisted electrosurgical devices, and methods of manufacture thereof |
JP2013513243A JP2013528077A (en) | 2010-05-28 | 2011-05-26 | Fluid-assisted electrosurgical device and method for manufacturing the same |
US14/045,185 US9333027B2 (en) | 2010-05-28 | 2013-10-03 | Method of producing an electrosurgical device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/790,309 US20110295249A1 (en) | 2010-05-28 | 2010-05-28 | Fluid-Assisted Electrosurgical Devices, and Methods of Manufacture Thereof |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/045,185 Continuation US9333027B2 (en) | 2010-05-28 | 2013-10-03 | Method of producing an electrosurgical device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110295249A1 true US20110295249A1 (en) | 2011-12-01 |
Family
ID=44262923
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/790,309 Abandoned US20110295249A1 (en) | 2010-05-28 | 2010-05-28 | Fluid-Assisted Electrosurgical Devices, and Methods of Manufacture Thereof |
US14/045,185 Active 2031-02-05 US9333027B2 (en) | 2010-05-28 | 2013-10-03 | Method of producing an electrosurgical device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/045,185 Active 2031-02-05 US9333027B2 (en) | 2010-05-28 | 2013-10-03 | Method of producing an electrosurgical device |
Country Status (6)
Country | Link |
---|---|
US (2) | US20110295249A1 (en) |
EP (1) | EP2575658A1 (en) |
JP (1) | JP2013528077A (en) |
CN (1) | CN103037794A (en) |
CA (1) | CA2795536A1 (en) |
WO (1) | WO2011150222A1 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8632533B2 (en) | 2009-02-23 | 2014-01-21 | Medtronic Advanced Energy Llc | Fluid-assisted electrosurgical device |
US8870864B2 (en) | 2011-10-28 | 2014-10-28 | Medtronic Advanced Energy Llc | Single instrument electrosurgery apparatus and its method of use |
US8882756B2 (en) | 2007-12-28 | 2014-11-11 | Medtronic Advanced Energy Llc | Fluid-assisted electrosurgical devices, methods and systems |
US8906012B2 (en) | 2010-06-30 | 2014-12-09 | Medtronic Advanced Energy Llc | Electrosurgical devices with wire electrode |
US8920417B2 (en) | 2010-06-30 | 2014-12-30 | Medtronic Advanced Energy Llc | Electrosurgical devices and methods of use thereof |
US9023040B2 (en) | 2010-10-26 | 2015-05-05 | Medtronic Advanced Energy Llc | Electrosurgical cutting devices |
US9131980B2 (en) | 2011-12-19 | 2015-09-15 | Medtronic Advanced Energy Llc | Electrosurgical devices |
US9226792B2 (en) | 2012-06-12 | 2016-01-05 | Medtronic Advanced Energy Llc | Debridement device and method |
US9254168B2 (en) | 2009-02-02 | 2016-02-09 | Medtronic Advanced Energy Llc | Electro-thermotherapy of tissue using penetrating microelectrode array |
US9345541B2 (en) | 2009-09-08 | 2016-05-24 | Medtronic Advanced Energy Llc | Cartridge assembly for electrosurgical devices, electrosurgical unit and methods of use thereof |
US9427281B2 (en) | 2011-03-11 | 2016-08-30 | Medtronic Advanced Energy Llc | Bronchoscope-compatible catheter provided with electrosurgical device |
US9592090B2 (en) | 2010-03-11 | 2017-03-14 | Medtronic Advanced Energy Llc | Bipolar electrosurgical cutter with position insensitive return electrode contact |
US9750565B2 (en) | 2011-09-30 | 2017-09-05 | Medtronic Advanced Energy Llc | Electrosurgical balloons |
US10188456B2 (en) | 2015-02-18 | 2019-01-29 | Medtronic Xomed, Inc. | Electrode assembly for RF energy enabled tissue debridement device |
US10194975B1 (en) | 2017-07-11 | 2019-02-05 | Medtronic Advanced Energy, Llc | Illuminated and isolated electrosurgical apparatus |
US10314647B2 (en) | 2013-12-23 | 2019-06-11 | Medtronic Advanced Energy Llc | Electrosurgical cutting instrument |
US10376302B2 (en) | 2015-02-18 | 2019-08-13 | Medtronic Xomed, Inc. | Rotating electrical connector for RF energy enabled tissue debridement device |
US10716612B2 (en) | 2015-12-18 | 2020-07-21 | Medtronic Advanced Energy Llc | Electrosurgical device with multiple monopolar electrode assembly |
US10813686B2 (en) | 2014-02-26 | 2020-10-27 | Medtronic Advanced Energy Llc | Electrosurgical cutting instrument |
US11051875B2 (en) | 2015-08-24 | 2021-07-06 | Medtronic Advanced Energy Llc | Multipurpose electrosurgical device |
US11207130B2 (en) | 2015-02-18 | 2021-12-28 | Medtronic Xomed, Inc. | RF energy enabled tissue debridement device |
US11234760B2 (en) | 2012-10-05 | 2022-02-01 | Medtronic Advanced Energy Llc | Electrosurgical device for cutting and removing tissue |
US11389227B2 (en) | 2015-08-20 | 2022-07-19 | Medtronic Advanced Energy Llc | Electrosurgical device with multivariate control |
US11432870B2 (en) | 2016-10-04 | 2022-09-06 | Avent, Inc. | Cooled RF probes |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10631914B2 (en) | 2013-09-30 | 2020-04-28 | Covidien Lp | Bipolar electrosurgical instrument with movable electrode and related systems and methods |
EP3917468B1 (en) | 2019-02-01 | 2023-11-15 | Carl Zeiss Meditec Cataract Technology Inc. | Ophthalmic cutting instruments having integrated aspiration pump |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020016590A1 (en) * | 2000-06-19 | 2002-02-07 | Uwe Schnitzler | Probe electrode |
US6497704B2 (en) * | 2001-04-04 | 2002-12-24 | Moshe Ein-Gal | Electrosurgical apparatus |
US6558385B1 (en) * | 2000-09-22 | 2003-05-06 | Tissuelink Medical, Inc. | Fluid-assisted medical device |
US20040019350A1 (en) * | 2000-03-06 | 2004-01-29 | O'brien Scott D. | Fluid-assisted medical devices, systems and methods |
US20050090816A1 (en) * | 2000-03-06 | 2005-04-28 | Mcclurken Michael E. | Fluid-assisted medical devices, systems and methods |
US20070106294A1 (en) * | 2002-12-12 | 2007-05-10 | Orion Industries, Ltd. | Anti-microbial electrosurgical electrode and method of manufacturing same |
US20080234674A1 (en) * | 2007-03-23 | 2008-09-25 | Salient Surgical Technologies, Inc. | Surgical devices and methods of use thereof |
US7811282B2 (en) * | 2000-03-06 | 2010-10-12 | Salient Surgical Technologies, Inc. | Fluid-assisted electrosurgical devices, electrosurgical unit with pump and methods of use thereof |
Family Cites Families (437)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2888928A (en) | 1957-04-15 | 1959-06-02 | Seiger Harry Wright | Coagulating surgical instrument |
US3682130A (en) * | 1965-03-19 | 1972-08-08 | Jeffers & Bailey Inc | Fusible temperature responsive trigger device |
US3750650A (en) | 1970-12-15 | 1973-08-07 | Hewlett Packard Gmbh | Double spiral electrode for intra-cavity attachment |
GB1438759A (en) * | 1972-06-02 | 1976-06-09 | Spembly Ltd | Cryo-surgical apparatus |
US3886945A (en) * | 1972-06-14 | 1975-06-03 | Frigitronics Of Conn Inc | Cryosurgical apparatus |
US3830239A (en) * | 1972-09-12 | 1974-08-20 | Frigitronics Of Conn Inc | Cryosurgical device |
US3827436A (en) * | 1972-11-10 | 1974-08-06 | Frigitronics Of Conn Inc | Multipurpose cryosurgical probe |
US3924628A (en) * | 1972-12-01 | 1975-12-09 | William Droegemueller | Cyrogenic bladder for necrosing tissue cells |
NL176833C (en) * | 1973-04-26 | 1985-06-17 | Draegerwerk Ag | HEAT-INSULATING FLEXIBLE PIPE. |
US3859986A (en) * | 1973-06-20 | 1975-01-14 | Jiro Okada | Surgical device |
US3907339A (en) * | 1973-07-23 | 1975-09-23 | Frigitronics Of Conn Inc | Cryogenic delivery line |
US3862627A (en) * | 1973-08-16 | 1975-01-28 | Sr Wendel J Hans | Suction electrode |
US4022215A (en) | 1973-12-10 | 1977-05-10 | Benson Jerrel W | Cryosurgical system |
GB1513565A (en) * | 1975-04-22 | 1978-06-07 | Spembly Ltd | Cryosurgical instruments |
US4018227A (en) * | 1975-10-09 | 1977-04-19 | Cryomedics, Inc. | Cryosurgical instrument |
US4060088A (en) * | 1976-01-16 | 1977-11-29 | Valleylab, Inc. | Electrosurgical method and apparatus for establishing an electrical discharge in an inert gas flow |
US4072152A (en) * | 1976-02-23 | 1978-02-07 | Linehan John H | Orthopedic cryosurgical apparatus |
GB1534162A (en) * | 1976-07-21 | 1978-11-29 | Lloyd J | Cyosurgical probe |
US4061135A (en) * | 1976-09-27 | 1977-12-06 | Jerrold Widran | Binocular endoscope |
DE2646229A1 (en) | 1976-10-13 | 1978-04-20 | Erbe Elektromedizin | HIGH FREQUENCY SURGICAL EQUIPMENT |
US6603988B2 (en) * | 2001-04-13 | 2003-08-05 | Kelsey, Inc. | Apparatus and method for delivering ablative laser energy and determining the volume of tumor mass destroyed |
US4275734A (en) * | 1977-08-12 | 1981-06-30 | Valleylab, Inc. | Cryosurgical apparatus and method |
US4321931A (en) | 1978-04-10 | 1982-03-30 | Hon Edward D | Electrode structure and applicator therefor |
DE2831199C3 (en) * | 1978-07-15 | 1981-01-08 | Erbe Elektromedizin Gmbh & Co Kg, 7400 Tuebingen | Cryosurgical device |
US4248224A (en) * | 1978-08-01 | 1981-02-03 | Jones James W | Double venous cannula |
US4276874A (en) | 1978-11-15 | 1981-07-07 | Datascope Corp. | Elongatable balloon catheter |
US4342218A (en) | 1980-01-16 | 1982-08-03 | Forrest Fox | Method and apparatus for zeroing and calibrating an invasive blood pressure monitoring system |
CA1129015A (en) * | 1980-06-11 | 1982-08-03 | Timofei S. Gudkin | Thermoelectric cryoprobe |
US4355642A (en) | 1980-11-14 | 1982-10-26 | Physio-Control Corporation | Multipolar electrode for body tissue |
US4377168A (en) * | 1981-02-27 | 1983-03-22 | Wallach Surgical Instruments, Inc. | Cryosurgical instrument |
US4381007A (en) | 1981-04-30 | 1983-04-26 | The United States Of America As Represented By The United States Department Of Energy | Multipolar corneal-shaping electrode with flexible removable skirt |
US4598698A (en) * | 1983-01-20 | 1986-07-08 | Warner-Lambert Technologies, Inc. | Diagnostic device |
US4601290A (en) * | 1983-10-11 | 1986-07-22 | Cabot Medical Corporation | Surgical instrument for cutting body tissue from a body area having a restricted space |
US5143073A (en) * | 1983-12-14 | 1992-09-01 | Edap International, S.A. | Wave apparatus system |
DE3490633T (en) | 1984-01-30 | 1985-12-12 | Char'kovskaja oblastnaja kliničeskaja bol'nica, Char'kov | Bipolar electrosurgical device |
US4664110A (en) * | 1985-03-18 | 1987-05-12 | University Of Southern California | Controlled rate freezing for cryorefractive surgery |
SE8502048D0 (en) * | 1985-04-26 | 1985-04-26 | Astra Tech Ab | VACUUM FIXED HALLS FOR MEDICAL USE |
US4917095A (en) * | 1985-11-18 | 1990-04-17 | Indianapolis Center For Advanced Research, Inc. | Ultrasound location and therapy method and apparatus for calculi in the body |
US4872346A (en) * | 1986-07-18 | 1989-10-10 | Indianapolis Center For Advanced Research | Multiple frequencies from single crystal |
US5231995A (en) * | 1986-11-14 | 1993-08-03 | Desai Jawahar M | Method for catheter mapping and ablation |
US5044165A (en) * | 1986-12-03 | 1991-09-03 | Board Of Regents, The University Of Texas | Cryo-slammer |
US4779611A (en) * | 1987-02-24 | 1988-10-25 | Grooters Ronald K | Disposable surgical scope guide |
US4802475A (en) * | 1987-06-22 | 1989-02-07 | Weshahy Ahmed H A G | Methods and apparatus of applying intra-lesional cryotherapy |
US4943290A (en) * | 1987-06-23 | 1990-07-24 | Concept Inc. | Electrolyte purging electrode tip |
US4950232A (en) * | 1987-08-11 | 1990-08-21 | Surelab Superior Research Laboratories | Cerebrospinal fluid shunt system |
US4931047A (en) | 1987-09-30 | 1990-06-05 | Cavitron, Inc. | Method and apparatus for providing enhanced tissue fragmentation and/or hemostasis |
US4815470A (en) * | 1987-11-13 | 1989-03-28 | Advanced Diagnostic Medical Systems, Inc. | Inflatable sheath for ultrasound probe |
US4919129A (en) | 1987-11-30 | 1990-04-24 | Celebration Medical Products, Inc. | Extendable electrocautery surgery apparatus and method |
US5588432A (en) * | 1988-03-21 | 1996-12-31 | Boston Scientific Corporation | Catheters for imaging, sensing electrical potentials, and ablating tissue |
US5029574A (en) * | 1988-04-14 | 1991-07-09 | Okamoto Industries, Inc. | Endoscopic balloon with a protective film thereon |
US4998933A (en) * | 1988-06-10 | 1991-03-12 | Advanced Angioplasty Products, Inc. | Thermal angioplasty catheter and method |
US5147355A (en) * | 1988-09-23 | 1992-09-15 | Brigham And Womens Hospital | Cryoablation catheter and method of performing cryoablation |
GB8822492D0 (en) * | 1988-09-24 | 1988-10-26 | Considine J | Apparatus for removing tumours from hollow organs of body |
US5108390A (en) * | 1988-11-14 | 1992-04-28 | Frigitronics, Inc. | Flexible cryoprobe |
GB2226497B (en) * | 1988-12-01 | 1992-07-01 | Spembly Medical Ltd | Cryosurgical probe |
GB8829525D0 (en) * | 1988-12-17 | 1989-02-01 | Spembly Medical Ltd | Cryosurgical apparatus |
US4932952A (en) * | 1988-12-20 | 1990-06-12 | Alto Development Corporation | Antishock, anticlog suction coagulator |
US4936281A (en) * | 1989-04-13 | 1990-06-26 | Everest Medical Corporation | Ultrasonically enhanced RF ablation catheter |
US4946460A (en) * | 1989-04-26 | 1990-08-07 | Cryo Instruments, Inc. | Apparatus for cryosurgery |
US4916922A (en) * | 1989-05-09 | 1990-04-17 | Mullens Patrick L | Rapid freezing apparatus |
DE3917328A1 (en) * | 1989-05-27 | 1990-11-29 | Wolf Gmbh Richard | BIPOLAR COAGULATION INSTRUMENT |
US5516505A (en) * | 1989-07-18 | 1996-05-14 | Mcdow; Ronald A. | Method for using cryogenic agents for treating skin lesions |
US5100388A (en) * | 1989-09-15 | 1992-03-31 | Interventional Thermodynamics, Inc. | Method and device for thermal ablation of hollow body organs |
GB9004427D0 (en) * | 1990-02-28 | 1990-04-25 | Nat Res Dev | Cryogenic cooling apparatus |
US5013312A (en) * | 1990-03-19 | 1991-05-07 | Everest Medical Corporation | Bipolar scalpel for harvesting internal mammary artery |
US5080660A (en) * | 1990-05-11 | 1992-01-14 | Applied Urology, Inc. | Electrosurgical electrode |
ZA917281B (en) * | 1990-09-26 | 1992-08-26 | Cryomedical Sciences Inc | Cryosurgical instrument and system and method of cryosurgery |
US5190541A (en) * | 1990-10-17 | 1993-03-02 | Boston Scientific Corporation | Surgical instrument and method |
US5269291A (en) * | 1990-12-10 | 1993-12-14 | Coraje, Inc. | Miniature ultrasonic transducer for plaque ablation |
US5324255A (en) * | 1991-01-11 | 1994-06-28 | Baxter International Inc. | Angioplasty and ablative devices having onboard ultrasound components and devices and methods for utilizing ultrasound to treat or prevent vasopasm |
EP0570520A1 (en) * | 1991-02-06 | 1993-11-24 | Laparomed Corporation | Electrosurgical device |
US5599347A (en) * | 1991-02-13 | 1997-02-04 | Applied Medical Resources Corporation | Surgical trocar with cutoff circuit |
US5465717A (en) * | 1991-02-15 | 1995-11-14 | Cardiac Pathways Corporation | Apparatus and Method for ventricular mapping and ablation |
US5316000A (en) * | 1991-03-05 | 1994-05-31 | Technomed International (Societe Anonyme) | Use of at least one composite piezoelectric transducer in the manufacture of an ultrasonic therapy apparatus for applying therapy, in a body zone, in particular to concretions, to tissue, or to bones, of a living being and method of ultrasonic therapy |
US5178133A (en) * | 1991-03-26 | 1993-01-12 | Pena Louis T | Laparoscopic retractor and sheath |
US5207674A (en) * | 1991-05-13 | 1993-05-04 | Hamilton Archie C | Electronic cryogenic surgical probe apparatus and method |
EP0766533A1 (en) * | 1991-05-17 | 1997-04-09 | InnerDyne, Inc. | Method and device for thermal ablation |
AU2185192A (en) * | 1991-05-29 | 1993-01-08 | Origin Medsystems, Inc. | Retraction apparatus and methods for endoscopic surgery |
US5361752A (en) * | 1991-05-29 | 1994-11-08 | Origin Medsystems, Inc. | Retraction apparatus and methods for endoscopic surgery |
US5370134A (en) * | 1991-05-29 | 1994-12-06 | Orgin Medsystems, Inc. | Method and apparatus for body structure manipulation and dissection |
US5195959A (en) * | 1991-05-31 | 1993-03-23 | Paul C. Smith | Electrosurgical device with suction and irrigation |
US5232516A (en) * | 1991-06-04 | 1993-08-03 | Implemed, Inc. | Thermoelectric device with recuperative heat exchangers |
US5234428A (en) * | 1991-06-11 | 1993-08-10 | Kaufman David I | Disposable electrocautery/cutting instrument with integral continuous smoke evacuation |
US5217860A (en) * | 1991-07-08 | 1993-06-08 | The American National Red Cross | Method for preserving organs for transplantation by vitrification |
US5452733A (en) * | 1993-02-22 | 1995-09-26 | Stanford Surgical Technologies, Inc. | Methods for performing thoracoscopic coronary artery bypass |
US5735290A (en) * | 1993-02-22 | 1998-04-07 | Heartport, Inc. | Methods and systems for performing thoracoscopic coronary bypass and other procedures |
US5571215A (en) * | 1993-02-22 | 1996-11-05 | Heartport, Inc. | Devices and methods for intracardiac procedures |
US5490819A (en) * | 1991-08-05 | 1996-02-13 | United States Surgical Corporation | Articulating endoscopic surgical apparatus |
US5254116A (en) * | 1991-09-06 | 1993-10-19 | Cryomedical Sciences, Inc. | Cryosurgical instrument with vent holes and method using same |
US5520682A (en) * | 1991-09-06 | 1996-05-28 | Cryomedical Sciences, Inc. | Cryosurgical instrument with vent means and method using same |
US5697281A (en) * | 1991-10-09 | 1997-12-16 | Arthrocare Corporation | System and method for electrosurgical cutting and ablation |
US6231591B1 (en) * | 1991-10-18 | 2001-05-15 | 2000 Injectx, Inc. | Method of localized fluid therapy |
US5395312A (en) * | 1991-10-18 | 1995-03-07 | Desai; Ashvin | Surgical tool |
US5383874A (en) * | 1991-11-08 | 1995-01-24 | Ep Technologies, Inc. | Systems for identifying catheters and monitoring their use |
US5197964A (en) * | 1991-11-12 | 1993-03-30 | Everest Medical Corporation | Bipolar instrument utilizing one stationary electrode and one movable electrode |
US5217001A (en) * | 1991-12-09 | 1993-06-08 | Nakao Naomi L | Endoscope sheath and related method |
US5228923A (en) * | 1991-12-13 | 1993-07-20 | Implemed, Inc. | Cylindrical thermoelectric cells |
US5697882A (en) * | 1992-01-07 | 1997-12-16 | Arthrocare Corporation | System and method for electrosurgical cutting and ablation |
FR2685872A1 (en) * | 1992-01-07 | 1993-07-09 | Edap Int | APPARATUS OF EXTRACORPOREAL ULTRASONIC HYPERTHERMIA WITH VERY HIGH POWER AND ITS OPERATING METHOD. |
US5683366A (en) * | 1992-01-07 | 1997-11-04 | Arthrocare Corporation | System and method for electrosurgical tissue canalization |
US6024733A (en) * | 1995-06-07 | 2000-02-15 | Arthrocare Corporation | System and method for epidermal tissue ablation |
US6086585A (en) * | 1995-06-07 | 2000-07-11 | Arthrocare Corporation | System and methods for electrosurgical treatment of sleep obstructive disorders |
US5400770A (en) * | 1992-01-15 | 1995-03-28 | Nakao; Naomi L. | Device utilizable with endoscope and related method |
US5649950A (en) * | 1992-01-22 | 1997-07-22 | C. R. Bard | System for the percutaneous transluminal front-end loading delivery and retrieval of a prosthetic occluder |
US5509411A (en) * | 1993-01-29 | 1996-04-23 | Cardima, Inc. | Intravascular sensing device |
US5222501A (en) | 1992-01-31 | 1993-06-29 | Duke University | Methods for the diagnosis and ablation treatment of ventricular tachycardia |
US5263493A (en) * | 1992-02-24 | 1993-11-23 | Boaz Avitall | Deflectable loop electrode array mapping and ablation catheter for cardiac chambers |
US5555883A (en) * | 1992-02-24 | 1996-09-17 | Avitall; Boaz | Loop electrode array mapping and ablation catheter for cardiac chambers |
US5254117A (en) * | 1992-03-17 | 1993-10-19 | Alton Dean Medical | Multi-functional endoscopic probe apparatus |
US5318525A (en) * | 1992-04-10 | 1994-06-07 | Medtronic Cardiorhythm | Steerable electrode catheter |
WO1993020878A1 (en) * | 1992-04-10 | 1993-10-28 | Cardiorhythm | Shapable handle for steerable electrode catheter |
WO1993020768A1 (en) * | 1992-04-13 | 1993-10-28 | Ep Technologies, Inc. | Steerable microwave antenna systems for cardiac ablation |
US5423807A (en) * | 1992-04-16 | 1995-06-13 | Implemed, Inc. | Cryogenic mapping and ablation catheter |
US5281215A (en) * | 1992-04-16 | 1994-01-25 | Implemed, Inc. | Cryogenic catheter |
US5281213A (en) * | 1992-04-16 | 1994-01-25 | Implemed, Inc. | Catheter for ice mapping and ablation |
US5443463A (en) * | 1992-05-01 | 1995-08-22 | Vesta Medical, Inc. | Coagulating forceps |
US5443470A (en) | 1992-05-01 | 1995-08-22 | Vesta Medical, Inc. | Method and apparatus for endometrial ablation |
US5277201A (en) * | 1992-05-01 | 1994-01-11 | Vesta Medical, Inc. | Endometrial ablation apparatus and method |
US5295484A (en) * | 1992-05-19 | 1994-03-22 | Arizona Board Of Regents For And On Behalf Of The University Of Arizona | Apparatus and method for intra-cardiac ablation of arrhythmias |
US5324284A (en) * | 1992-06-05 | 1994-06-28 | Cardiac Pathways, Inc. | Endocardial mapping and ablation system utilizing a separately controlled ablation catheter and method |
US5330521A (en) * | 1992-06-29 | 1994-07-19 | Cohen Donald M | Low resistance implantable electrical leads |
US5275595A (en) * | 1992-07-06 | 1994-01-04 | Dobak Iii John D | Cryosurgical instrument |
WO1994002077A2 (en) * | 1992-07-15 | 1994-02-03 | Angelase, Inc. | Ablation catheter system |
US5435308A (en) * | 1992-07-16 | 1995-07-25 | Abbott Laboratories | Multi-purpose multi-parameter cardiac catheter |
GB2269107B (en) * | 1992-07-31 | 1996-05-08 | Spembly Medical Ltd | Cryosurgical ablation |
EP0669840A4 (en) * | 1992-09-11 | 1995-11-15 | Advanced Surgical Inc | Self-introducing infusion catheter. |
US5401272A (en) * | 1992-09-25 | 1995-03-28 | Envision Surgical Systems, Inc. | Multimodality probe with extendable bipolar electrodes |
US5336220A (en) * | 1992-10-09 | 1994-08-09 | Symbiosis Corporation | Tubing for endoscopic electrosurgical suction-irrigation instrument |
US5687737A (en) * | 1992-10-09 | 1997-11-18 | Washington University | Computerized three-dimensional cardiac mapping with interactive visual displays |
US5322520A (en) | 1992-11-12 | 1994-06-21 | Implemed, Inc. | Iontophoretic structure for medical devices |
US5676693A (en) * | 1992-11-13 | 1997-10-14 | Scimed Life Systems, Inc. | Electrophysiology device |
WO1994010922A1 (en) * | 1992-11-13 | 1994-05-26 | Ep Technologies, Inc. | Cardial ablation systems using temperature monitoring |
US6068653A (en) * | 1992-11-13 | 2000-05-30 | Scimed Life Systems, Inc. | Electrophysiology catheter device |
US5334193A (en) * | 1992-11-13 | 1994-08-02 | American Cardiac Ablation Co., Inc. | Fluid cooled ablation catheter |
CA2109980A1 (en) * | 1992-12-01 | 1994-06-02 | Mir A. Imran | Steerable catheter with adjustable bend location and/or radius and method |
US5348554A (en) | 1992-12-01 | 1994-09-20 | Cardiac Pathways Corporation | Catheter for RF ablation with cooled electrode |
US5469853A (en) * | 1992-12-11 | 1995-11-28 | Tetrad Corporation | Bendable ultrasonic probe and sheath for use therewith |
US5558671A (en) * | 1993-07-22 | 1996-09-24 | Yates; David C. | Impedance feedback monitor for electrosurgical instrument |
US5324286A (en) * | 1993-01-21 | 1994-06-28 | Arthur A. Fowle, Inc. | Entrained cryogenic droplet transfer method and cryosurgical instrument |
US5409483A (en) * | 1993-01-22 | 1995-04-25 | Jeffrey H. Reese | Direct visualization surgical probe |
IL104506A (en) * | 1993-01-25 | 1997-11-20 | Israel State | Fast changing heating- cooling device and method, particularly for cryogenic and/or surgical use |
US5645082A (en) * | 1993-01-29 | 1997-07-08 | Cardima, Inc. | Intravascular method and system for treating arrhythmia |
US6010531A (en) * | 1993-02-22 | 2000-01-04 | Heartport, Inc. | Less-invasive devices and methods for cardiac valve surgery |
US6161543A (en) * | 1993-02-22 | 2000-12-19 | Epicor, Inc. | Methods of epicardial ablation for creating a lesion around the pulmonary veins |
US5797960A (en) * | 1993-02-22 | 1998-08-25 | Stevens; John H. | Method and apparatus for thoracoscopic intracardiac procedures |
US5445638B1 (en) * | 1993-03-08 | 1998-05-05 | Everest Medical Corp | Bipolar coagulation and cutting forceps |
US5403311A (en) * | 1993-03-29 | 1995-04-04 | Boston Scientific Corporation | Electro-coagulation and ablation and other electrotherapeutic treatments of body tissue |
US6235020B1 (en) * | 1993-05-10 | 2001-05-22 | Arthrocare Corporation | Power supply and methods for fluid delivery in electrosurgery |
US6832996B2 (en) * | 1995-06-07 | 2004-12-21 | Arthrocare Corporation | Electrosurgical systems and methods for treating tissue |
US6915806B2 (en) * | 1993-05-10 | 2005-07-12 | Arthrocare Corporation | Method for harvesting graft vessel |
US5571088A (en) * | 1993-07-01 | 1996-11-05 | Boston Scientific Corporation | Ablation catheters |
US5630837A (en) * | 1993-07-01 | 1997-05-20 | Boston Scientific Corporation | Acoustic ablation |
US5569243A (en) * | 1993-07-13 | 1996-10-29 | Symbiosis Corporation | Double acting endoscopic scissors with bipolar cautery capability |
US5545200A (en) * | 1993-07-20 | 1996-08-13 | Medtronic Cardiorhythm | Steerable electrophysiology catheter |
US5487757A (en) * | 1993-07-20 | 1996-01-30 | Medtronic Cardiorhythm | Multicurve deflectable catheter |
US5385148A (en) * | 1993-07-30 | 1995-01-31 | The Regents Of The University Of California | Cardiac imaging and ablation catheter |
US5928191A (en) * | 1993-07-30 | 1999-07-27 | E.P. Technologies, Inc. | Variable curve electrophysiology catheter |
US5921982A (en) * | 1993-07-30 | 1999-07-13 | Lesh; Michael D. | Systems and methods for ablating body tissue |
WO1995005212A2 (en) * | 1993-08-11 | 1995-02-23 | Electro-Catheter Corporation | Improved ablation electrode |
US5405322A (en) * | 1993-08-12 | 1995-04-11 | Boston Scientific Corporation | Method for treating aneurysms with a thermal source |
US5431168A (en) * | 1993-08-23 | 1995-07-11 | Cordis-Webster, Inc. | Steerable open-lumen catheter |
US5431649A (en) * | 1993-08-27 | 1995-07-11 | Medtronic, Inc. | Method and apparatus for R-F ablation |
US5980516A (en) * | 1993-08-27 | 1999-11-09 | Medtronic, Inc. | Method and apparatus for R-F ablation |
US5405376A (en) * | 1993-08-27 | 1995-04-11 | Medtronic, Inc. | Method and apparatus for ablation |
US5490521A (en) * | 1993-08-31 | 1996-02-13 | Medtronic, Inc. | Ultrasound biopsy needle |
US5437651A (en) * | 1993-09-01 | 1995-08-01 | Research Medical, Inc. | Medical suction apparatus |
US5396887A (en) * | 1993-09-23 | 1995-03-14 | Cardiac Pathways Corporation | Apparatus and method for detecting contact pressure |
US5607462A (en) * | 1993-09-24 | 1997-03-04 | Cardiac Pathways Corporation | Catheter assembly, catheter and multi-catheter introducer for use therewith |
DE4333983A1 (en) * | 1993-10-05 | 1995-04-06 | Delma Elektro Med App | High frequency electrosurgical instrument |
US5496312A (en) * | 1993-10-07 | 1996-03-05 | Valleylab Inc. | Impedance and temperature generator control |
US5400783A (en) * | 1993-10-12 | 1995-03-28 | Cardiac Pathways Corporation | Endocardial mapping apparatus with rotatable arm and method |
US5582609A (en) * | 1993-10-14 | 1996-12-10 | Ep Technologies, Inc. | Systems and methods for forming large lesions in body tissue using curvilinear electrode elements |
US5673695A (en) * | 1995-08-02 | 1997-10-07 | Ep Technologies, Inc. | Methods for locating and ablating accessory pathways in the heart |
US5545193A (en) | 1993-10-15 | 1996-08-13 | Ep Technologies, Inc. | Helically wound radio-frequency emitting electrodes for creating lesions in body tissue |
WO1995010225A1 (en) * | 1993-10-15 | 1995-04-20 | Ep Technologies, Inc. | Multiple electrode element for mapping and ablating |
WO1995010322A1 (en) * | 1993-10-15 | 1995-04-20 | Ep Technologies, Inc. | Creating complex lesion patterns in body tissue |
US5575810A (en) * | 1993-10-15 | 1996-11-19 | Ep Technologies, Inc. | Composite structures and methods for ablating tissue to form complex lesion patterns in the treatment of cardiac conditions and the like |
US5722400A (en) * | 1995-02-16 | 1998-03-03 | Daig Corporation | Guiding introducers for use in the treatment of left ventricular tachycardia |
US5427119A (en) * | 1993-11-03 | 1995-06-27 | Daig Corporation | Guiding introducer for right atrium |
US5497774A (en) * | 1993-11-03 | 1996-03-12 | Daig Corporation | Guiding introducer for left atrium |
US5575766A (en) * | 1993-11-03 | 1996-11-19 | Daig Corporation | Process for the nonsurgical mapping and treatment of atrial arrhythmia using catheters guided by shaped guiding introducers |
US5536267A (en) | 1993-11-08 | 1996-07-16 | Zomed International | Multiple electrode ablation apparatus |
US5599345A (en) | 1993-11-08 | 1997-02-04 | Zomed International, Inc. | RF treatment apparatus |
ES2149241T3 (en) * | 1993-11-10 | 2000-11-01 | Xomed Inc | BIPOLAR ELECTRO-SURGICAL INSTRUMENT AND MANUFACTURING METHOD. |
US5921924A (en) * | 1993-12-03 | 1999-07-13 | Avitall; Boaz | Mapping and ablation catheter system utilizing multiple control elements |
US5730127A (en) | 1993-12-03 | 1998-03-24 | Avitall; Boaz | Mapping and ablation catheter system |
US5487385A (en) | 1993-12-03 | 1996-01-30 | Avitall; Boaz | Atrial mapping and ablation catheter system |
CA2138076A1 (en) * | 1993-12-17 | 1995-06-18 | Philip E. Eggers | Monopolar electrosurgical instruments |
US5462521A (en) * | 1993-12-21 | 1995-10-31 | Angeion Corporation | Fluid cooled and perfused tip for a catheter |
DE69417580T2 (en) * | 1993-12-22 | 1999-12-16 | Sulzer Osypka Gmbh | ULTRASONICALLY MARKED INTRACARDIAL ABLATION CATHETER |
US5462545A (en) * | 1994-01-31 | 1995-10-31 | New England Medical Center Hospitals, Inc. | Catheter electrodes |
US5507773A (en) * | 1994-02-18 | 1996-04-16 | Ethicon Endo-Surgery | Cable-actuated jaw assembly for surgical instruments |
GB2287375B (en) * | 1994-03-11 | 1998-04-15 | Intravascular Res Ltd | Ultrasonic transducer array and method of manufacturing the same |
US6030381A (en) * | 1994-03-18 | 2000-02-29 | Medicor Corporation | Composite dielectric coating for electrosurgical implements |
US5417709A (en) * | 1994-04-12 | 1995-05-23 | Symbiosis Corporation | Endoscopic instrument with end effectors forming suction and/or irrigation lumens |
US5540562A (en) * | 1994-04-28 | 1996-07-30 | Ashirus Technologies, Inc. | Single-piston, multi-mode fluid displacement pump |
US5843021A (en) * | 1994-05-09 | 1998-12-01 | Somnus Medical Technologies, Inc. | Cell necrosis apparatus |
US5478309A (en) * | 1994-05-27 | 1995-12-26 | William P. Sweezer, Jr. | Catheter system and method for providing cardiopulmonary bypass pump support during heart surgery |
US5560362A (en) * | 1994-06-13 | 1996-10-01 | Acuson Corporation | Active thermal control of ultrasound transducers |
US5617854A (en) * | 1994-06-22 | 1997-04-08 | Munsif; Anand | Shaped catheter device and method |
US5681278A (en) * | 1994-06-23 | 1997-10-28 | Cormedics Corp. | Coronary vasculature treatment method |
US5681308A (en) * | 1994-06-24 | 1997-10-28 | Stuart D. Edwards | Ablation apparatus for cardiac chambers |
US5575788A (en) * | 1994-06-24 | 1996-11-19 | Stuart D. Edwards | Thin layer ablation apparatus |
US6056744A (en) * | 1994-06-24 | 2000-05-02 | Conway Stuart Medical, Inc. | Sphincter treatment apparatus |
US5505730A (en) | 1994-06-24 | 1996-04-09 | Stuart D. Edwards | Thin layer ablation apparatus |
GB9413070D0 (en) * | 1994-06-29 | 1994-08-17 | Gyrus Medical Ltd | Electrosurgical apparatus |
US5452582A (en) * | 1994-07-06 | 1995-09-26 | Apd Cryogenics, Inc. | Cryo-probe |
US5680860A (en) * | 1994-07-07 | 1997-10-28 | Cardiac Pathways Corporation | Mapping and/or ablation catheter with coilable distal extremity and method for using same |
US5690611A (en) | 1994-07-08 | 1997-11-25 | Daig Corporation | Process for the treatment of atrial arrhythima using a catheter guided by shaped giding introducers |
US5545195A (en) * | 1994-08-01 | 1996-08-13 | Boston Scientific Corporation | Interstitial heating of tissue |
US5797905A (en) * | 1994-08-08 | 1998-08-25 | E. P. Technologies Inc. | Flexible tissue ablation elements for making long lesions |
US5810802A (en) | 1994-08-08 | 1998-09-22 | E.P. Technologies, Inc. | Systems and methods for controlling tissue ablation using multiple temperature sensing elements |
US6142994A (en) * | 1994-10-07 | 2000-11-07 | Ep Technologies, Inc. | Surgical method and apparatus for positioning a diagnostic a therapeutic element within the body |
US6464700B1 (en) * | 1994-10-07 | 2002-10-15 | Scimed Life Systems, Inc. | Loop structures for positioning a diagnostic or therapeutic element on the epicardium or other organ surface |
US5885278A (en) * | 1994-10-07 | 1999-03-23 | E.P. Technologies, Inc. | Structures for deploying movable electrode elements |
US5836947A (en) * | 1994-10-07 | 1998-11-17 | Ep Technologies, Inc. | Flexible structures having movable splines for supporting electrode elements |
US6152920A (en) * | 1997-10-10 | 2000-11-28 | Ep Technologies, Inc. | Surgical method and apparatus for positioning a diagnostic or therapeutic element within the body |
US5722402A (en) * | 1994-10-11 | 1998-03-03 | Ep Technologies, Inc. | Systems and methods for guiding movable electrode elements within multiple-electrode structures |
US5556397A (en) * | 1994-10-26 | 1996-09-17 | Laser Centers Of America | Coaxial electrosurgical instrument |
US5573532A (en) | 1995-01-13 | 1996-11-12 | Cryomedical Sciences, Inc. | Cryogenic surgical instrument and method of manufacturing the same |
US5595183A (en) * | 1995-02-17 | 1997-01-21 | Ep Technologies, Inc. | Systems and methods for examining heart tissue employing multiple electrode structures and roving electrodes |
US5897553A (en) | 1995-11-02 | 1999-04-27 | Medtronic, Inc. | Ball point fluid-assisted electrocautery device |
US6409722B1 (en) | 1998-07-07 | 2002-06-25 | Medtronic, Inc. | Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue |
US6063081A (en) | 1995-02-22 | 2000-05-16 | Medtronic, Inc. | Fluid-assisted electrocautery device |
US5676662A (en) * | 1995-03-17 | 1997-10-14 | Daig Corporation | Ablation catheter |
US6264650B1 (en) * | 1995-06-07 | 2001-07-24 | Arthrocare Corporation | Methods for electrosurgical treatment of intervertebral discs |
US6602248B1 (en) * | 1995-06-07 | 2003-08-05 | Arthro Care Corp. | Methods for repairing damaged intervertebral discs |
US5688267A (en) * | 1995-05-01 | 1997-11-18 | Ep Technologies, Inc. | Systems and methods for sensing multiple temperature conditions during tissue ablation |
WO1996034570A1 (en) * | 1995-05-01 | 1996-11-07 | Ep Technologies, Inc. | Systems and methods for obtaining desired lesion characteristics while ablating body tissue |
WO1996034646A1 (en) * | 1995-05-01 | 1996-11-07 | Medtronic Cardiorhythm | Dual curve ablation catheter and method |
EP0957792A4 (en) * | 1995-05-02 | 2000-09-20 | Heart Rhythm Tech Inc | System for controlling the energy delivered to a patient for ablation |
US5735280A (en) * | 1995-05-02 | 1998-04-07 | Heart Rhythm Technologies, Inc. | Ultrasound energy delivery system and method |
US6575969B1 (en) * | 1995-05-04 | 2003-06-10 | Sherwood Services Ag | Cool-tip radiofrequency thermosurgery electrode system for tumor ablation |
US5895355A (en) * | 1995-05-23 | 1999-04-20 | Cardima, Inc. | Over-the-wire EP catheter |
US5827216A (en) * | 1995-06-07 | 1998-10-27 | Cormedics Corp. | Method and apparatus for accessing the pericardial space |
US6022346A (en) * | 1995-06-07 | 2000-02-08 | Ep Technologies, Inc. | Tissue heating and ablation systems and methods using self-heated electrodes |
US6293943B1 (en) * | 1995-06-07 | 2001-09-25 | Ep Technologies, Inc. | Tissue heating and ablation systems and methods which predict maximum tissue temperature |
US6149620A (en) * | 1995-11-22 | 2000-11-21 | Arthrocare Corporation | System and methods for electrosurgical tissue treatment in the presence of electrically conductive fluid |
US5718241A (en) * | 1995-06-07 | 1998-02-17 | Biosense, Inc. | Apparatus and method for treating cardiac arrhythmias with no discrete target |
US6113592A (en) * | 1995-06-09 | 2000-09-05 | Engineering & Research Associates, Inc. | Apparatus and method for controlling ablation depth |
US5697925A (en) * | 1995-06-09 | 1997-12-16 | Engineering & Research Associates, Inc. | Apparatus and method for thermal ablation |
KR100463935B1 (en) * | 1995-06-23 | 2005-05-16 | 자이러스 메디칼 리미티드 | An electrosurgical instrument |
US6293942B1 (en) * | 1995-06-23 | 2001-09-25 | Gyrus Medical Limited | Electrosurgical generator method |
US6019757A (en) * | 1995-07-07 | 2000-02-01 | Target Therapeutics, Inc. | Endoluminal electro-occlusion detection apparatus and method |
US6023638A (en) * | 1995-07-28 | 2000-02-08 | Scimed Life Systems, Inc. | System and method for conducting electrophysiological testing using high-voltage energy pulses to stun tissue |
US5678550A (en) * | 1995-08-11 | 1997-10-21 | The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services | Apparatus and method for in situ detection of areas of cardiac electrical activity |
US5836311A (en) * | 1995-09-20 | 1998-11-17 | Medtronic, Inc. | Method and apparatus for temporarily immobilizing a local area of tissue |
US5681294A (en) * | 1995-09-21 | 1997-10-28 | Abbott Laboratories | Fluid delivery set |
US5590657A (en) * | 1995-11-06 | 1997-01-07 | The Regents Of The University Of Michigan | Phased array ultrasound system and method for cardiac ablation |
US5716389A (en) * | 1995-11-13 | 1998-02-10 | Walinsky; Paul | Cardiac ablation catheter arrangement with movable guidewire |
US5707355A (en) * | 1995-11-15 | 1998-01-13 | Zimmon Science Corporation | Apparatus and method for the treatment of esophageal varices and mucosal neoplasms |
US5733280A (en) * | 1995-11-15 | 1998-03-31 | Avitall; Boaz | Cryogenic epicardial mapping and ablation |
US5906606A (en) * | 1995-12-04 | 1999-05-25 | Target Therapuetics, Inc. | Braided body balloon catheter |
US6350276B1 (en) * | 1996-01-05 | 2002-02-26 | Thermage, Inc. | Tissue remodeling apparatus containing cooling fluid |
US5879348A (en) * | 1996-04-12 | 1999-03-09 | Ep Technologies, Inc. | Electrode structures formed from flexible, porous, or woven materials |
US5671747A (en) * | 1996-01-24 | 1997-09-30 | Hewlett-Packard Company | Ultrasound probe having interchangeable accessories |
US5904711A (en) * | 1996-02-08 | 1999-05-18 | Heartport, Inc. | Expandable thoracoscopic defibrillation catheter system and method |
WO1997029678A2 (en) * | 1996-02-15 | 1997-08-21 | Biosense Inc. | Catheter calibration and usage monitoring system |
US6682501B1 (en) * | 1996-02-23 | 2004-01-27 | Gyrus Ent, L.L.C. | Submucosal tonsillectomy apparatus and method |
US6036687A (en) * | 1996-03-05 | 2000-03-14 | Vnus Medical Technologies, Inc. | Method and apparatus for treating venous insufficiency |
US5895417A (en) * | 1996-03-06 | 1999-04-20 | Cardiac Pathways Corporation | Deflectable loop design for a linear lesion ablation apparatus |
US5800482A (en) * | 1996-03-06 | 1998-09-01 | Cardiac Pathways Corporation | Apparatus and method for linear lesion ablation |
US5755760A (en) * | 1996-03-11 | 1998-05-26 | Medtronic, Inc. | Deflectable catheter |
US5676692A (en) * | 1996-03-28 | 1997-10-14 | Indianapolis Center For Advanced Research, Inc. | Focussed ultrasound tissue treatment method |
US6302880B1 (en) * | 1996-04-08 | 2001-10-16 | Cardima, Inc. | Linear ablation assembly |
NL1003024C2 (en) | 1996-05-03 | 1997-11-06 | Tjong Hauw Sie | Stimulus conduction blocking instrument. |
US6066139A (en) * | 1996-05-14 | 2000-05-23 | Sherwood Services Ag | Apparatus and method for sterilization and embolization |
US5800428A (en) * | 1996-05-16 | 1998-09-01 | Angeion Corporation | Linear catheter ablation system |
US5730074A (en) * | 1996-06-07 | 1998-03-24 | Farmer Fabrications, Inc. | Liquid dispenser for seed planter |
US5861021A (en) * | 1996-06-17 | 1999-01-19 | Urologix Inc | Microwave thermal therapy of cardiac tissue |
GB2314274A (en) * | 1996-06-20 | 1997-12-24 | Gyrus Medical Ltd | Electrode construction for an electrosurgical instrument |
US5882346A (en) * | 1996-07-15 | 1999-03-16 | Cardiac Pathways Corporation | Shapable catheter using exchangeable core and method of use |
US5720775A (en) * | 1996-07-31 | 1998-02-24 | Cordis Corporation | Percutaneous atrial line ablation catheter |
US6126682A (en) | 1996-08-13 | 2000-10-03 | Oratec Interventions, Inc. | Method for treating annular fissures in intervertebral discs |
US6461357B1 (en) * | 1997-02-12 | 2002-10-08 | Oratec Interventions, Inc. | Electrode for electrosurgical ablation of tissue |
US5993447A (en) * | 1996-08-16 | 1999-11-30 | United States Surgical | Apparatus for thermal treatment of tissue |
US5836943A (en) * | 1996-08-23 | 1998-11-17 | Team Medical, L.L.C. | Electrosurgical generator |
US5846187A (en) * | 1996-09-13 | 1998-12-08 | Genzyme Corporation | Redo sternotomy retractor |
US5836909A (en) * | 1996-09-13 | 1998-11-17 | Cosmescu; Ioan | Automatic fluid control system for use in open and laparoscopic laser surgery and electrosurgery and method therefor |
US5697928A (en) * | 1996-09-23 | 1997-12-16 | Uab Research Foundation | Cardic electrode catheter |
US6311692B1 (en) | 1996-10-22 | 2001-11-06 | Epicor, Inc. | Apparatus and method for diagnosis and therapy of electrophysiological disease |
US6237605B1 (en) * | 1996-10-22 | 2001-05-29 | Epicor, Inc. | Methods of epicardial ablation |
US5893848A (en) * | 1996-10-24 | 1999-04-13 | Plc Medical Systems, Inc. | Gauging system for monitoring channel depth in percutaneous endocardial revascularization |
US6371956B1 (en) * | 1996-10-28 | 2002-04-16 | Endoscopic Concepts, Inc. | Monopolar electrosurgical end effectors |
US5827268A (en) * | 1996-10-30 | 1998-10-27 | Hearten Medical, Inc. | Device for the treatment of patent ductus arteriosus and method of using the device |
US5785706A (en) * | 1996-11-18 | 1998-07-28 | Daig Corporation | Nonsurgical mapping and treatment of cardiac arrhythmia using a catheter contained within a guiding introducer containing openings |
US5931848A (en) * | 1996-12-02 | 1999-08-03 | Angiotrax, Inc. | Methods for transluminally performing surgery |
US5931810A (en) * | 1996-12-05 | 1999-08-03 | Comedicus Incorporated | Method for accessing the pericardial space |
US5891142A (en) * | 1996-12-06 | 1999-04-06 | Eggers & Associates, Inc. | Electrosurgical forceps |
US5782828A (en) * | 1996-12-11 | 1998-07-21 | Irvine Biomedical, Inc. | Ablation catheter with multiple flexible curves |
EP0954246B1 (en) * | 1996-12-12 | 2006-03-22 | Erbe Elektromedizin GmbH | Coagulation device for coagulating biological tissues |
US6071279A (en) * | 1996-12-19 | 2000-06-06 | Ep Technologies, Inc. | Branched structures for supporting multiple electrode elements |
US6113596A (en) * | 1996-12-30 | 2000-09-05 | Enable Medical Corporation | Combination monopolar-bipolar electrosurgical instrument system, instrument and cable |
US5913854A (en) * | 1997-02-04 | 1999-06-22 | Medtronic, Inc. | Fluid cooled ablation catheter and method for making |
US5916213A (en) * | 1997-02-04 | 1999-06-29 | Medtronic, Inc. | Systems and methods for tissue mapping and ablation |
US5844349A (en) | 1997-02-11 | 1998-12-01 | Tetrad Corporation | Composite autoclavable ultrasonic transducers and methods of making |
US6699244B2 (en) * | 1997-02-12 | 2004-03-02 | Oratec Interventions, Inc. | Electrosurgical instrument having a chamber to volatize a liquid |
US5788636A (en) * | 1997-02-25 | 1998-08-04 | Acuson Corporation | Method and system for forming an ultrasound image of a tissue while simultaneously ablating the tissue |
US5899898A (en) | 1997-02-27 | 1999-05-04 | Cryocath Technologies Inc. | Cryosurgical linear ablation |
US5897554A (en) * | 1997-03-01 | 1999-04-27 | Irvine Biomedical, Inc. | Steerable catheter having a loop electrode |
US5873845A (en) * | 1997-03-17 | 1999-02-23 | General Electric Company | Ultrasound transducer with focused ultrasound refraction plate |
US5954661A (en) * | 1997-03-31 | 1999-09-21 | Thomas Jefferson University | Tissue characterization and treatment using pacing |
US5879295A (en) * | 1997-04-02 | 1999-03-09 | Medtronic, Inc. | Enhanced contact steerable bowing electrode catheter assembly |
US6283988B1 (en) * | 1997-04-07 | 2001-09-04 | Broncus Technologies, Inc. | Bronchial stenter having expandable electrodes |
US6273907B1 (en) * | 1997-04-07 | 2001-08-14 | Broncus Technologies, Inc. | Bronchial stenter |
US5972026A (en) * | 1997-04-07 | 1999-10-26 | Broncus Technologies, Inc. | Bronchial stenter having diametrically adjustable electrodes |
US5906580A (en) * | 1997-05-05 | 1999-05-25 | Creare Inc. | Ultrasound system and method of administering ultrasound including a plurality of multi-layer transducer elements |
US5971983A (en) | 1997-05-09 | 1999-10-26 | The Regents Of The University Of California | Tissue ablation device and method of use |
US6012457A (en) | 1997-07-08 | 2000-01-11 | The Regents Of The University Of California | Device and method for forming a circumferential conduction block in a pulmonary vein |
US5921983A (en) * | 1997-05-13 | 1999-07-13 | Shannon, Jr.; Malcolm L. | Electrosurgical device for uvulopalatoplasty |
US5792140A (en) * | 1997-05-15 | 1998-08-11 | Irvine Biomedical, Inc. | Catheter having cooled multiple-needle electrode |
US5849028A (en) * | 1997-05-16 | 1998-12-15 | Irvine Biomedical, Inc. | Catheter and method for radiofrequency ablation of cardiac tissue |
US6217576B1 (en) * | 1997-05-19 | 2001-04-17 | Irvine Biomedical Inc. | Catheter probe for treating focal atrial fibrillation in pulmonary veins |
US5843152A (en) * | 1997-06-02 | 1998-12-01 | Irvine Biomedical, Inc. | Catheter system having a ball electrode |
US5993412A (en) * | 1997-05-19 | 1999-11-30 | Bioject, Inc. | Injection apparatus |
US5876399A (en) * | 1997-05-28 | 1999-03-02 | Irvine Biomedical, Inc. | Catheter system and methods thereof |
US5957919A (en) | 1997-07-02 | 1999-09-28 | Laufer; Michael D. | Bleb reducer |
US6245064B1 (en) * | 1997-07-08 | 2001-06-12 | Atrionix, Inc. | Circumferential ablation device assembly |
US6117101A (en) | 1997-07-08 | 2000-09-12 | The Regents Of The University Of California | Circumferential ablation device assembly |
US6096037A (en) | 1997-07-29 | 2000-08-01 | Medtronic, Inc. | Tissue sealing electrosurgery device and methods of sealing tissue |
US6010500A (en) * | 1997-07-21 | 2000-01-04 | Cardiac Pathways Corporation | Telescoping apparatus and method for linear lesion ablation |
US5975919A (en) * | 1997-08-26 | 1999-11-02 | Lucent Technologies Inc. | Terminal housing and wire board arrangement with solderless mountable insulation displacement connector terminals |
US6056747A (en) * | 1997-08-04 | 2000-05-02 | Gynecare, Inc. | Apparatus and method for treatment of body tissues |
US5908029A (en) * | 1997-08-15 | 1999-06-01 | Heartstent Corporation | Coronary artery bypass with reverse flow |
US6120496A (en) * | 1998-05-05 | 2000-09-19 | Scimed Life Systems, Inc. | Surgical method and apparatus for positioning a diagnostic or therapeutic element within the body and coupling device for use with same |
US6579288B1 (en) * | 1997-10-10 | 2003-06-17 | Scimed Life Systems, Inc. | Fluid cooled apparatus for supporting diagnostic and therapeutic elements in contact with tissue |
US6610055B1 (en) * | 1997-10-10 | 2003-08-26 | Scimed Life Systems, Inc. | Surgical method for positioning a diagnostic or therapeutic element on the epicardium or other organ surface |
US6007499A (en) * | 1997-10-31 | 1999-12-28 | University Of Washington | Method and apparatus for medical procedures using high-intensity focused ultrasound |
US6120500A (en) * | 1997-11-12 | 2000-09-19 | Daig Corporation | Rail catheter ablation and mapping system |
US6270471B1 (en) * | 1997-12-23 | 2001-08-07 | Misonix Incorporated | Ultrasonic probe with isolated outer cannula |
US6251092B1 (en) * | 1997-12-30 | 2001-06-26 | Medtronic, Inc. | Deflectable guiding catheter |
US6258087B1 (en) * | 1998-02-19 | 2001-07-10 | Curon Medical, Inc. | Expandable electrode assemblies for forming lesions to treat dysfunction in sphincters and adjoining tissue regions |
US6142993A (en) * | 1998-02-27 | 2000-11-07 | Ep Technologies, Inc. | Collapsible spline structure using a balloon as an expanding actuator |
JPH11285502A (en) * | 1998-04-03 | 1999-10-19 | Asahi Optical Co Ltd | High frequency treatment tool for endoscope |
US5989248A (en) * | 1998-04-07 | 1999-11-23 | Tu; Hosheng | Medical device and methods for treating tissues |
US6508815B1 (en) * | 1998-05-08 | 2003-01-21 | Novacept | Radio-frequency generator for powering an ablation device |
DE19820995A1 (en) * | 1998-05-11 | 1999-11-18 | Berchtold Gmbh & Co Geb | High frequency surgery instrument with a fluid delivery channel |
US6527767B2 (en) * | 1998-05-20 | 2003-03-04 | New England Medical Center | Cardiac ablation system and method for treatment of cardiac arrhythmias and transmyocardial revascularization |
US6231518B1 (en) * | 1998-05-26 | 2001-05-15 | Comedicus Incorporated | Intrapericardial electrophysiological procedures |
US6186951B1 (en) * | 1998-05-26 | 2001-02-13 | Riverside Research Institute | Ultrasonic systems and methods for fluid perfusion and flow rate measurement |
US6679882B1 (en) * | 1998-06-22 | 2004-01-20 | Lina Medical Aps | Electrosurgical device for coagulating and for making incisions, a method of severing blood vessels and a method of coagulating and for making incisions in or severing tissue |
US6322559B1 (en) * | 1998-07-06 | 2001-11-27 | Vnus Medical Technologies, Inc. | Electrode catheter having coil structure |
US6537248B2 (en) * | 1998-07-07 | 2003-03-25 | Medtronic, Inc. | Helical needle apparatus for creating a virtual electrode used for the ablation of tissue |
US6706039B2 (en) | 1998-07-07 | 2004-03-16 | Medtronic, Inc. | Method and apparatus for creating a bi-polar virtual electrode used for the ablation of tissue |
US6238393B1 (en) * | 1998-07-07 | 2001-05-29 | Medtronic, Inc. | Method and apparatus for creating a bi-polar virtual electrode used for the ablation of tissue |
US6537272B2 (en) * | 1998-07-07 | 2003-03-25 | Medtronic, Inc. | Apparatus and method for creating, maintaining, and controlling a virtual electrode used for the ablation of tissue |
US6016811A (en) * | 1998-09-01 | 2000-01-25 | Fidus Medical Technology Corporation | Method of using a microwave ablation catheter with a loop configuration |
US6251128B1 (en) * | 1998-09-01 | 2001-06-26 | Fidus Medical Technology Corporation | Microwave ablation catheter with loop configuration |
US6042556A (en) * | 1998-09-04 | 2000-03-28 | University Of Washington | Method for determining phase advancement of transducer elements in high intensity focused ultrasound |
US6245065B1 (en) * | 1998-09-10 | 2001-06-12 | Scimed Life Systems, Inc. | Systems and methods for controlling power in an electrosurgical probe |
US6385472B1 (en) * | 1999-09-10 | 2002-05-07 | Stereotaxis, Inc. | Magnetically navigable telescoping catheter and method of navigating telescoping catheter |
US6425867B1 (en) * | 1998-09-18 | 2002-07-30 | University Of Washington | Noise-free real time ultrasonic imaging of a treatment site undergoing high intensity focused ultrasound therapy |
US6015391A (en) * | 1998-10-06 | 2000-01-18 | Medsol, Corp. | Biopsy needle structure |
US6083237A (en) * | 1998-10-23 | 2000-07-04 | Ethico Endo-Surgery, Inc. | Biopsy instrument with tissue penetrating spiral |
US6245062B1 (en) * | 1998-10-23 | 2001-06-12 | Afx, Inc. | Directional reflector shield assembly for a microwave ablation instrument |
US6328735B1 (en) * | 1998-10-30 | 2001-12-11 | E.P., Limited | Thermal ablation system |
US6210406B1 (en) * | 1998-12-03 | 2001-04-03 | Cordis Webster, Inc. | Split tip electrode catheter and signal processing RF ablation system |
DE102004033595A1 (en) * | 2004-07-07 | 2006-02-16 | Celon Ag Medical Instruments | Bipolar coagulation electrode |
US6296619B1 (en) * | 1998-12-30 | 2001-10-02 | Pharmasonics, Inc. | Therapeutic ultrasonic catheter for delivering a uniform energy dose |
JP2002536040A (en) * | 1999-02-02 | 2002-10-29 | トランサージカル,インコーポレイテッド | High intensity focused ultrasound applicator in the body |
US6217528B1 (en) * | 1999-02-11 | 2001-04-17 | Scimed Life Systems, Inc. | Loop structure having improved tissue contact capability |
US6217575B1 (en) * | 1999-02-24 | 2001-04-17 | Scimed Life Systems, Inc. | PMR catheter |
US6352923B1 (en) * | 1999-03-01 | 2002-03-05 | United Microelectronics Corp. | Method of fabricating direct contact through hole type |
US6251110B1 (en) * | 1999-03-31 | 2001-06-26 | Ethicon Endo-Surgery, Inc. | Combined radio frequency and ultrasonic surgical device |
US20050010095A1 (en) * | 1999-04-05 | 2005-01-13 | Medtronic, Inc. | Multi-purpose catheter apparatus and method of use |
US20010007070A1 (en) * | 1999-04-05 | 2001-07-05 | Medtronic, Inc. | Ablation catheter assembly and method for isolating a pulmonary vein |
US6325797B1 (en) | 1999-04-05 | 2001-12-04 | Medtronic, Inc. | Ablation catheter and method for isolating a pulmonary vein |
US6702811B2 (en) * | 1999-04-05 | 2004-03-09 | Medtronic, Inc. | Ablation catheter assembly with radially decreasing helix and method of use |
US6352533B1 (en) * | 1999-05-03 | 2002-03-05 | Alan G. Ellman | Electrosurgical handpiece for treating tissue |
US6478793B1 (en) * | 1999-06-11 | 2002-11-12 | Sherwood Services Ag | Ablation treatment of bone metastases |
US6235024B1 (en) * | 1999-06-21 | 2001-05-22 | Hosheng Tu | Catheters system having dual ablation capability |
US6398792B1 (en) * | 1999-06-21 | 2002-06-04 | O'connor Lawrence | Angioplasty catheter with transducer using balloon for focusing of ultrasonic energy and method for use |
EP1207788A4 (en) * | 1999-07-19 | 2009-12-09 | St Jude Medical Atrial Fibrill | Apparatus and method for ablating tissue |
US6371955B1 (en) * | 1999-08-10 | 2002-04-16 | Biosense Webster, Inc. | Atrial branding iron catheter and a method for treating atrial fibrillation |
US20020087155A1 (en) * | 1999-08-30 | 2002-07-04 | Underwood Ronald A. | Systems and methods for intradermal collagen stimulation |
US6332881B1 (en) * | 1999-09-01 | 2001-12-25 | Cardima, Inc. | Surgical ablation tool |
AU7352500A (en) * | 1999-09-08 | 2001-04-10 | Curon Medical, Inc. | Systems and methods for monitoring and controlling use of medical devices |
US6368275B1 (en) * | 1999-10-07 | 2002-04-09 | Acuson Corporation | Method and apparatus for diagnostic medical information gathering, hyperthermia treatment, or directed gene therapy |
US6645199B1 (en) * | 1999-11-22 | 2003-11-11 | Scimed Life Systems, Inc. | Loop structures for supporting diagnostic and therapeutic elements contact with body tissue and expandable push devices for use with same |
US6692450B1 (en) | 2000-01-19 | 2004-02-17 | Medtronic Xomed, Inc. | Focused ultrasound ablation devices having selectively actuatable ultrasound emitting elements and methods of using the same |
US6595934B1 (en) * | 2000-01-19 | 2003-07-22 | Medtronic Xomed, Inc. | Methods of skin rejuvenation using high intensity focused ultrasound to form an ablated tissue area containing a plurality of lesions |
US6413254B1 (en) * | 2000-01-19 | 2002-07-02 | Medtronic Xomed, Inc. | Method of tongue reduction by thermal ablation using high intensity focused ultrasound |
US6361531B1 (en) * | 2000-01-21 | 2002-03-26 | Medtronic Xomed, Inc. | Focused ultrasound ablation devices having malleable handle shafts and methods of using the same |
US6689131B2 (en) * | 2001-03-08 | 2004-02-10 | Tissuelink Medical, Inc. | Electrosurgical device having a tissue reduction sensor |
US6953461B2 (en) * | 2002-05-16 | 2005-10-11 | Tissuelink Medical, Inc. | Fluid-assisted medical devices, systems and methods |
EP1946716B1 (en) | 2000-03-06 | 2017-07-19 | Salient Surgical Technologies, Inc. | Fluid delivery system and controller for electrosurgical devices |
CA2399570C (en) * | 2000-03-24 | 2009-02-10 | Transurgical, Inc. | Apparatus and method for intrabody thermal treatment |
US6419648B1 (en) * | 2000-04-21 | 2002-07-16 | Insightec-Txsonics Ltd. | Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system |
US6514250B1 (en) | 2000-04-27 | 2003-02-04 | Medtronic, Inc. | Suction stabilized epicardial ablation devices |
AU2001249874A1 (en) | 2000-04-27 | 2001-11-12 | Medtronic, Inc. | System and method for assessing transmurality of ablation lesions |
US6546935B2 (en) * | 2000-04-27 | 2003-04-15 | Atricure, Inc. | Method for transmural ablation |
US6488680B1 (en) | 2000-04-27 | 2002-12-03 | Medtronic, Inc. | Variable length electrodes for delivery of irrigated ablation |
US6558382B2 (en) * | 2000-04-27 | 2003-05-06 | Medtronic, Inc. | Suction stabilized epicardial ablation devices |
WO2001082812A1 (en) * | 2000-04-27 | 2001-11-08 | Medtronic, Inc. | Vibration sensitive ablation apparatus and method |
DE20009426U1 (en) * | 2000-05-26 | 2001-10-31 | Desinger Kai | Surgical instrument |
US6477396B1 (en) * | 2000-07-07 | 2002-11-05 | Biosense Webster, Inc. | Mapping and ablation catheter |
US6942661B2 (en) * | 2000-08-30 | 2005-09-13 | Boston Scientific Scimed, Inc. | Fluid cooled apparatus for supporting diagnostic and therapeutic elements in contact with tissue |
US20040138621A1 (en) * | 2003-01-14 | 2004-07-15 | Jahns Scott E. | Devices and methods for interstitial injection of biologic agents into tissue |
US7628780B2 (en) * | 2001-01-13 | 2009-12-08 | Medtronic, Inc. | Devices and methods for interstitial injection of biologic agents into tissue |
US6775575B2 (en) * | 2001-02-26 | 2004-08-10 | D. Bommi Bommannan | System and method for reducing post-surgical complications |
US6666862B2 (en) * | 2001-03-01 | 2003-12-23 | Cardiac Pacemakers, Inc. | Radio frequency ablation system and method linking energy delivery with fluid flow |
US7250048B2 (en) * | 2001-04-26 | 2007-07-31 | Medtronic, Inc. | Ablation system and method of use |
US6807968B2 (en) | 2001-04-26 | 2004-10-26 | Medtronic, Inc. | Method and system for treatment of atrial tachyarrhythmias |
US6663627B2 (en) * | 2001-04-26 | 2003-12-16 | Medtronic, Inc. | Ablation system and method of use |
US6699240B2 (en) * | 2001-04-26 | 2004-03-02 | Medtronic, Inc. | Method and apparatus for tissue ablation |
US6648883B2 (en) * | 2001-04-26 | 2003-11-18 | Medtronic, Inc. | Ablation system and method of use |
US7166106B2 (en) * | 2001-06-05 | 2007-01-23 | Erbe Elektromedizin Gmbh | Bipolar clamp |
US6766817B2 (en) | 2001-07-25 | 2004-07-27 | Tubarc Technologies, Llc | Fluid conduction utilizing a reversible unsaturated siphon with tubarc porosity action |
US6652514B2 (en) * | 2001-09-13 | 2003-11-25 | Alan G. Ellman | Intelligent selection system for electrosurgical instrument |
US6855145B2 (en) * | 2001-10-09 | 2005-02-15 | Ethicon, Inc. | Self-wetting, dry-field bipolar electrodes for endoscopic surgery |
US6656175B2 (en) | 2001-12-11 | 2003-12-02 | Medtronic, Inc. | Method and system for treatment of atrial tachyarrhythmias |
AU2002357166A1 (en) * | 2001-12-12 | 2003-06-23 | Tissuelink Medical, Inc. | Fluid-assisted medical devices, systems and methods |
US7967816B2 (en) * | 2002-01-25 | 2011-06-28 | Medtronic, Inc. | Fluid-assisted electrosurgical instrument with shapeable electrode |
US6827715B2 (en) * | 2002-01-25 | 2004-12-07 | Medtronic, Inc. | System and method of performing an electrosurgical procedure |
US20030204185A1 (en) * | 2002-04-26 | 2003-10-30 | Sherman Marshall L. | System and method for monitoring use of disposable catheters |
US8043286B2 (en) * | 2002-05-03 | 2011-10-25 | The Board Of Trustees Of The Leland Stanford Junior University | Method and apparatus for plasma-mediated thermo-electrical ablation |
ES2268357T3 (en) * | 2002-05-10 | 2007-03-16 | Tyco Healthcare Group Lp | ELECTROCHIRURGICAL STAPLERING DEVICE. |
US7118566B2 (en) * | 2002-05-16 | 2006-10-10 | Medtronic, Inc. | Device and method for needle-less interstitial injection of fluid for ablation of cardiac tissue |
US7294143B2 (en) * | 2002-05-16 | 2007-11-13 | Medtronic, Inc. | Device and method for ablation of cardiac tissue |
SE524441C2 (en) * | 2002-10-04 | 2004-08-10 | Plasma Surgical Invest Ltd | Plasma surgical device for reducing bleeding in living tissue by means of a gas plasma |
US7083620B2 (en) * | 2002-10-30 | 2006-08-01 | Medtronic, Inc. | Electrosurgical hemostat |
US7736361B2 (en) * | 2003-02-14 | 2010-06-15 | The Board Of Trustees Of The Leland Stamford Junior University | Electrosurgical system with uniformly enhanced electric field and minimal collateral damage |
WO2004080278A2 (en) * | 2003-03-06 | 2004-09-23 | Tissuelink Medical, Inc. | Fluid -assisted medical devices, systems and methods |
US7497857B2 (en) * | 2003-04-29 | 2009-03-03 | Medtronic, Inc. | Endocardial dispersive electrode for use with a monopolar RF ablation pen |
US7232440B2 (en) * | 2003-11-17 | 2007-06-19 | Sherwood Services Ag | Bipolar forceps having monopolar extension |
ES2308505T3 (en) * | 2004-05-14 | 2008-12-01 | Medtronic, Inc. | ULTRASONIC ENERGY USE SYSTEM FOCUSED ON HIGH INTENS IDAD TO FORM A CUTTED FABRIC AREA. |
EP1750607A2 (en) * | 2004-06-02 | 2007-02-14 | Medtronic, Inc. | Loop ablation apparatus and method |
US7322974B2 (en) * | 2004-08-10 | 2008-01-29 | Medtronic, Inc. | TUNA device with integrated saline reservoir |
US7540872B2 (en) * | 2004-09-21 | 2009-06-02 | Covidien Ag | Articulating bipolar electrosurgical instrument |
US7744615B2 (en) * | 2006-07-18 | 2010-06-29 | Covidien Ag | Apparatus and method for transecting tissue on a bipolar vessel sealing instrument |
US20080103494A1 (en) | 2006-11-01 | 2008-05-01 | Boston Scientific Scimed, Inc. | Bipolar ablation probe having porous electrodes for delivering electrically conductive fluid |
CA2668407A1 (en) | 2006-11-02 | 2008-05-15 | Peak Surgical, Inc. | Electric plasma-mediated cutting and coagulation of tissue and surgical apparatus |
US8012154B2 (en) * | 2007-02-08 | 2011-09-06 | Bovie Medical Corporation | Modular electrosurgical adaptors and multi function active shafts for use in electrosurgical instruments |
WO2009086448A1 (en) * | 2007-12-28 | 2009-07-09 | Salient Surgical Technologies, Inc. | Fluid-assisted electrosurgical devices, methods and systems |
JP2013524862A (en) | 2010-01-15 | 2013-06-20 | メドトロニック・アドヴァンスド・エナジー・エルエルシー | Electrosurgical apparatus, electrosurgical unit, and method of use thereof |
US8906012B2 (en) * | 2010-06-30 | 2014-12-09 | Medtronic Advanced Energy Llc | Electrosurgical devices with wire electrode |
US9060765B2 (en) * | 2010-11-08 | 2015-06-23 | Bovie Medical Corporation | Electrosurgical apparatus with retractable blade |
-
2010
- 2010-05-28 US US12/790,309 patent/US20110295249A1/en not_active Abandoned
-
2011
- 2011-05-26 CN CN2011800262846A patent/CN103037794A/en active Pending
- 2011-05-26 CA CA2795536A patent/CA2795536A1/en not_active Abandoned
- 2011-05-26 WO PCT/US2011/038162 patent/WO2011150222A1/en active Application Filing
- 2011-05-26 JP JP2013513243A patent/JP2013528077A/en not_active Withdrawn
- 2011-05-26 EP EP11723847.7A patent/EP2575658A1/en not_active Withdrawn
-
2013
- 2013-10-03 US US14/045,185 patent/US9333027B2/en active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040019350A1 (en) * | 2000-03-06 | 2004-01-29 | O'brien Scott D. | Fluid-assisted medical devices, systems and methods |
US20050090816A1 (en) * | 2000-03-06 | 2005-04-28 | Mcclurken Michael E. | Fluid-assisted medical devices, systems and methods |
US20080058796A1 (en) * | 2000-03-06 | 2008-03-06 | Tissuelink Medical, Inc. | Fluid-assisted medical devices, systems and methods |
US7811282B2 (en) * | 2000-03-06 | 2010-10-12 | Salient Surgical Technologies, Inc. | Fluid-assisted electrosurgical devices, electrosurgical unit with pump and methods of use thereof |
US8048070B2 (en) * | 2000-03-06 | 2011-11-01 | Salient Surgical Technologies, Inc. | Fluid-assisted medical devices, systems and methods |
US20020016590A1 (en) * | 2000-06-19 | 2002-02-07 | Uwe Schnitzler | Probe electrode |
US6558385B1 (en) * | 2000-09-22 | 2003-05-06 | Tissuelink Medical, Inc. | Fluid-assisted medical device |
US6497704B2 (en) * | 2001-04-04 | 2002-12-24 | Moshe Ein-Gal | Electrosurgical apparatus |
US20050015085A1 (en) * | 2002-02-12 | 2005-01-20 | Tissuelink Medical, Inc. | Fluid-assisted medical devices, systems and methods |
US20050059966A1 (en) * | 2002-02-12 | 2005-03-17 | Mcclurken Michael E. | Fluid-assisted medical devices, systems and methods |
US20070106294A1 (en) * | 2002-12-12 | 2007-05-10 | Orion Industries, Ltd. | Anti-microbial electrosurgical electrode and method of manufacturing same |
US20080234674A1 (en) * | 2007-03-23 | 2008-09-25 | Salient Surgical Technologies, Inc. | Surgical devices and methods of use thereof |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8882756B2 (en) | 2007-12-28 | 2014-11-11 | Medtronic Advanced Energy Llc | Fluid-assisted electrosurgical devices, methods and systems |
US9254168B2 (en) | 2009-02-02 | 2016-02-09 | Medtronic Advanced Energy Llc | Electro-thermotherapy of tissue using penetrating microelectrode array |
US8632533B2 (en) | 2009-02-23 | 2014-01-21 | Medtronic Advanced Energy Llc | Fluid-assisted electrosurgical device |
US9486283B2 (en) | 2009-02-23 | 2016-11-08 | Medtronic Advanced Energy Llc | Fluid-assisted electrosurgical device |
US11751942B2 (en) | 2009-09-08 | 2023-09-12 | Medtronic Advanced Energy Llc | Surgical device |
US9345541B2 (en) | 2009-09-08 | 2016-05-24 | Medtronic Advanced Energy Llc | Cartridge assembly for electrosurgical devices, electrosurgical unit and methods of use thereof |
US10085796B2 (en) | 2010-03-11 | 2018-10-02 | Medtronic Advanced Energy Llc | Bipolar electrosurgical cutter with position insensitive return electrode contact |
US9592090B2 (en) | 2010-03-11 | 2017-03-14 | Medtronic Advanced Energy Llc | Bipolar electrosurgical cutter with position insensitive return electrode contact |
US8906012B2 (en) | 2010-06-30 | 2014-12-09 | Medtronic Advanced Energy Llc | Electrosurgical devices with wire electrode |
US8920417B2 (en) | 2010-06-30 | 2014-12-30 | Medtronic Advanced Energy Llc | Electrosurgical devices and methods of use thereof |
US9445858B2 (en) | 2010-06-30 | 2016-09-20 | Medtronic Advanced Energy Llc | Bipolar electrosurgical device |
US9023040B2 (en) | 2010-10-26 | 2015-05-05 | Medtronic Advanced Energy Llc | Electrosurgical cutting devices |
US9427281B2 (en) | 2011-03-11 | 2016-08-30 | Medtronic Advanced Energy Llc | Bronchoscope-compatible catheter provided with electrosurgical device |
US10517671B2 (en) | 2011-03-11 | 2019-12-31 | Medtronic Advanced Engery LLC | Broncoscope-compatible catheter provided with electrosurgical device |
US9750565B2 (en) | 2011-09-30 | 2017-09-05 | Medtronic Advanced Energy Llc | Electrosurgical balloons |
US10154878B2 (en) | 2011-09-30 | 2018-12-18 | Medtronic Advanced Energy Llc | Electrosurgical balloons |
US8870864B2 (en) | 2011-10-28 | 2014-10-28 | Medtronic Advanced Energy Llc | Single instrument electrosurgery apparatus and its method of use |
US9131980B2 (en) | 2011-12-19 | 2015-09-15 | Medtronic Advanced Energy Llc | Electrosurgical devices |
US9226792B2 (en) | 2012-06-12 | 2016-01-05 | Medtronic Advanced Energy Llc | Debridement device and method |
US11737812B2 (en) | 2012-06-12 | 2023-08-29 | Medtronic Advanced Energy Llc | Debridement device and method |
US10653478B2 (en) | 2012-06-12 | 2020-05-19 | Medtronic Advanced Energy, Llc | Debridement device and method |
US11234760B2 (en) | 2012-10-05 | 2022-02-01 | Medtronic Advanced Energy Llc | Electrosurgical device for cutting and removing tissue |
US10314647B2 (en) | 2013-12-23 | 2019-06-11 | Medtronic Advanced Energy Llc | Electrosurgical cutting instrument |
US11864824B2 (en) | 2014-02-26 | 2024-01-09 | Medtronic Advanced Energy Llc | Electrosurgical cutting instrument |
US10813686B2 (en) | 2014-02-26 | 2020-10-27 | Medtronic Advanced Energy Llc | Electrosurgical cutting instrument |
US11197714B2 (en) | 2015-02-18 | 2021-12-14 | Medtronic Xomed, Inc. | Electrode assembly for RF energy enabled tissue debridement device |
US11207130B2 (en) | 2015-02-18 | 2021-12-28 | Medtronic Xomed, Inc. | RF energy enabled tissue debridement device |
US10376302B2 (en) | 2015-02-18 | 2019-08-13 | Medtronic Xomed, Inc. | Rotating electrical connector for RF energy enabled tissue debridement device |
US10188456B2 (en) | 2015-02-18 | 2019-01-29 | Medtronic Xomed, Inc. | Electrode assembly for RF energy enabled tissue debridement device |
US11389227B2 (en) | 2015-08-20 | 2022-07-19 | Medtronic Advanced Energy Llc | Electrosurgical device with multivariate control |
US11051875B2 (en) | 2015-08-24 | 2021-07-06 | Medtronic Advanced Energy Llc | Multipurpose electrosurgical device |
US10716612B2 (en) | 2015-12-18 | 2020-07-21 | Medtronic Advanced Energy Llc | Electrosurgical device with multiple monopolar electrode assembly |
US11432870B2 (en) | 2016-10-04 | 2022-09-06 | Avent, Inc. | Cooled RF probes |
US10806504B2 (en) | 2017-07-11 | 2020-10-20 | Medtronic Advanced Energy, Llc | Illuminated and isolated electrosurgical apparatus |
US11672591B2 (en) | 2017-07-11 | 2023-06-13 | Medtronic Advanced Energy Llc | Illuminated and isolated electrosurgical apparatus |
US10194975B1 (en) | 2017-07-11 | 2019-02-05 | Medtronic Advanced Energy, Llc | Illuminated and isolated electrosurgical apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP2575658A1 (en) | 2013-04-10 |
US20140026395A1 (en) | 2014-01-30 |
CN103037794A (en) | 2013-04-10 |
JP2013528077A (en) | 2013-07-08 |
US9333027B2 (en) | 2016-05-10 |
WO2011150222A1 (en) | 2011-12-01 |
CA2795536A1 (en) | 2011-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9333027B2 (en) | Method of producing an electrosurgical device | |
US9895191B2 (en) | Electrode sheath for electrosurgical device | |
US9486283B2 (en) | Fluid-assisted electrosurgical device | |
US8906012B2 (en) | Electrosurgical devices with wire electrode | |
US8920417B2 (en) | Electrosurgical devices and methods of use thereof | |
EP2227174B1 (en) | Fluid-assisted electrosurgical device | |
US8216233B2 (en) | Surgical devices and methods of use thereof | |
AU2011258209A1 (en) | Fluid- assisted electrosurgical devices, and methods of manufacture thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SALIENT SURGICAL TECHNOLOGIES, INC., NEW HAMPSHIRE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BLOOM, ELIOT F.;GREENLAW, CHAD M.;GREELEY, ROGER D.;AND OTHERS;SIGNING DATES FROM 20100723 TO 20100728;REEL/FRAME:024847/0145 |
|
AS | Assignment |
Owner name: MEDTRONIC ADVANCED ENERGY LLC, MINNESOTA Free format text: CHANGE OF NAME;ASSIGNOR:SALIENT SURGICAL TECHNOLOGIES, INC.;REEL/FRAME:029037/0652 Effective date: 20120119 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |