WO1999013790A9 - Electro-surgical cutting and cauterizing tool - Google Patents
Electro-surgical cutting and cauterizing toolInfo
- Publication number
- WO1999013790A9 WO1999013790A9 PCT/US1998/019573 US9819573W WO9913790A9 WO 1999013790 A9 WO1999013790 A9 WO 1999013790A9 US 9819573 W US9819573 W US 9819573W WO 9913790 A9 WO9913790 A9 WO 9913790A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- longitudinal member
- tip
- distal end
- surgical
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
-
- 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
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/00296—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means mounted on an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
- A61B2017/00464—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable for use with different instruments
-
- 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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00184—Moving parts
- A61B2018/00196—Moving parts reciprocating lengthwise
-
- 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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00184—Moving parts
- A61B2018/00202—Moving parts rotating
- A61B2018/00208—Moving parts rotating actively driven, e.g. by a motor
-
- 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
- A61B2018/0091—Handpieces of the surgical instrument or device
-
- 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1861—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument inserted into a body lumen or cavity, e.g. a catheter
Definitions
- This invention relates to improved surgical, cutting and cauterizing apparatus and methods for their use.
- arthroscopic surgery is becoming increasingly popular, because it generally does less damage than open procedures, produces less scarring in and around joints, and results in faster healing and return of the patient to full productivity. Nevertheless, arthroscopic surgery has its limitations. The surgeon must operate through a narrow tube formed in the body on which surgery is being carried out, which is awkward. Only one probe can be used at a time for many operations. Often the viewing camera is positioned at an angle different from the surgeon's normal gaze. This contrasts with "open surgery” where the surgeon has relative ease of viewing the surgical site and can freely move both hands.
- a surgeon will penetrate a vessel within the surgical site. At this point, the surgeon may desire to cauterize the vessel.
- One way of cauterizing the vessel is the use of radio frequency (RF) energy, as described in U.S. Patent 5,100,402 to Fan.
- RF radio frequency
- Such RF methods offer a quick and relatively easy way of cauterizing penetrated vessels.
- use of current RF cauterizing devices usually requires the surgeon to withdraw the surgical tool being used at the time, and insert a tool for cauterizing the penetrated vessel. This switching of the tools is usually required because of the space limitations involved in arthroscopic surgery.
- the invention relates to a surgical apparatus, comprising a surgical instrument including a housing and a cannula, and the cannula attached at a proximal end to the housing and defining at a distal end thereof an opening and the housing containing a drive interface; and a surgical tool including a shaft, a tip, and the tip located in the opening, and the shaft contained within the cannula and the shaft defining a longitudinal annulus extending from a proximal end of the shaft to a distal end of the shaft, and the shaft mechanically coupled at the distal end to the tip, and at the proximal end, to the drive interface and the drive interface producing a surgical motion of the tip; and an longitudinal member, including a proximal and a distal end, and the longitudinal member located within the annulus, and the longitudinal member extendable from an interior position in which the distal end is positioned within the tip to an exterior position in which the distal end extends beyond the tip, and energized in the exterior position to produce
- the claimed invention relates to a cutting and cauterizing device for connection to a surgical instrument, and the surgical instrument including a drive interface and a first interconnector, and the cutting and cauterizing device comprising a cannula defining at a distal end thereof an opening; a second interconnector, suitable for switchably coupling to a power supply, and the second interconnector located at the proximal end of the cannula and shaped to couple to the first interconnector; and a surgical tool including a shaft and a tip, and the tip located in the opening, and the shaft contained within the cannula, and the shaft defining a longitudinal annulus extending from a proximal end of the shaft to a distal end of the shaft, and the shaft coupled at a distal end to the tip and at a proximal end mechanically coupled to the drive interface to permit a surgical motion of the tip, and a longitudinal member, including a proximal and a distal end, and the longitudinal member located within the annul
- the invention relates to methods of performing surgical procedures, using the surgical apparatus or the cutting and cauterizing device in the course of performing the surgical procedure.
- FIG. 1 A is an isometric view of an embodiment of the claimed surgical instrument, with a one rotor design.
- FIG. IB is an isometric view of another embodiment of the claimed surgical instrument, showing a two rotor design.
- FIG. 2A is an isometric view of an embodiment of the invention, with a two rotor design, in an unenergized position.
- FIG. 2B is a cross section of the embodiment shown in FIG. 2 A.
- FIG. 3 A is an isometric view of the embodiment shown in FIG. 2A, in the energized position.
- FIG. 3B is a cross-section of the embodiment shown in FIG. 3A.
- FIG. 4 A is an isometric view of the embodiment shown in FIG. 2A, in the retracted position.
- FIG. 4B is a cross-section of the embodiment shown in FIG. 4A.
- FIG. 5 A shows details of a surgical apparatus according to the invention, in the extended position.
- FIG. 5B is a cross-section of the embodiment shown in FIG. 5 A.
- FIG. 6 is an end on view of a portion of the surgical apparatus according to the invention.
- FIG. 1A shows an isometric view of an embodiment of the inventive surgical apparatus, with a integrated rotor design.
- FIG 1A shows surgical apparatus 100, surgical instrument 102, and surgical tool 104.
- Surgical instrument 102 includes housing 108, cannula 120, brush 110, switch 106, first coil 112, second coil 114, and drive interface 154.
- Cannula 120 includes opening 138.
- the surgical tool includes shaft 130, slots 116, longitudinal member 132, first rotor 134, tip 142, distal end 136 of the longitudinal member, and drive coupling 152.
- Surgical instrument 102 includes housing 108 and cannula 120 with the cannula attached to the proximal end of the housing.
- the cannula defines at its distal end an opening 138.
- the housing includes drive interface 154.
- Switch 106 is located on housing 108.
- Surgical tool 104 includes shaft 130 which is contained within the cannula.
- the shaft has tip 142 attached to the shaft at a distal end of the shaft, and drive coupling 152 attached to the shaft at a proximal end of the shaft.
- the shaft contains within it longitudinal member 132 and distal end 136 of the longitudinal member. Attached at the proximal end of longitudinal member 132 is first rotor 134.
- Slots 116 permit the longitudinal motion of the longitudinal member and the attached first rotor with respect to the shaft.
- Coils 112 and 114 are located adjacent to one another, surrounding the first rotor, within the housing.
- brush 110 which is electrically coupled to distal end 136 of the longitudinal member, via first rotor 134, and longitudinal member 132.
- drive interface 154 engages drive coupling 152 to impart a surgical motion to tip 142 via shaft 130.
- Switch 106 can alternately energize either first coil 112 or second coil 114 to move longitudinal member 132 along the longitudinal axis of the shaft, thereby extending or retracting the longitudinal member.
- longitudinal member 132 The movement of longitudinal member 132 is induced through the magnetic coupling between an energized one of coils 112 or 114 and the first rotor 134.
- first coil When the first coil is energized, the longitudinal member is retracted, causing the distal end 136 of the longitudinal member to retract within the tip.
- second coil When the second coil is energized, the longitudinal member is extended, causing the distal end of the longitudinal member to extend beyond the tip.
- the distal end of the longitudinal member is energized through brush 110, and first rotor 134, thereby producing a cauterizing action.
- surgical motion in any of the embodiments of this invention can be, for example, rotary, reciprocal, rotary-reciprocal, etc.
- FIG. IB shows an isometric view of another embodiment of the inventive surgical apparatus, with a two rotor design.
- FIG IB shows surgical apparatus 100, surgical instrument 102, and surgical tool 104.
- Surgical instrument 102 includes housing 108, cannula 120, brush 146, first coil 112, second coil 114, electrical conductor 150, and drive interface 154.
- Cannula 120 includes opening 138.
- the surgical tool includes shaft 130, slots 116, additional slots 148, longitudinal member 132, first rotor 134, second rotor 144, tip 142, distal end 136 of the longitudinal member, and drive coupling 152.
- Surgical instrument 102 includes housing 108 and cannula 120 with the cannula attached to the proximal end of the housing.
- the cannula defines at its distal end an opening 138.
- the housing includes drive interface 154.
- Surgical tool 104 includes shaft 130 which is contained within the cannula.
- the shaft has tip 142 attached to the shaft at a distal end of the shaft, and drive coupling 152 attached to the shaft at a proximal end of the shaft.
- the shaft contains within it longitudinal member 132 and distal end 136 of the longitudinal member. Attached at the proximal end of longitudinal member 132 are first rotor 134 and second rotor 144.
- Slots 116 and additional slots 148 permit the longitudinal motion of the longitudinal member and the attached rotor with respect to the shaft.
- drive coupling 152 At the proximal end of the shaft is drive coupling 152.
- Coils 112 and 114 are located adjacent to one another, surrounding the first rotor, within the housing.
- Electrical conductor 150 electrically couples brush
- the brush is electrically coupled to distal end 136 of the longitudinal member, via first rotor 134, and longitudinal member 132.
- drive interface 154 engages drive coupling 152 to impart a surgical motion to tip 142 via shaft 130.
- Either first coil 112 or second coil 114 can be energized to move longitudinal member 132 along the longitudinal axis of the shaft, thereby extending or retracting the longitudinal member.
- the movement of longitudinal member 132 is induced through the magnetic coupling between either of coils 112 or 114 and the first rotor 134.
- the distal end 136 of longitudinal member is energized by a power supply via electrical conductor 150, brush 146, and second rotor 144. This produces a cauterizing action at the distal end of the longitudinal member.
- FIG. 2A shows an isometric view of another embodiment of the inventive surgical apparatus, with a two rotor design.
- the longitudinal member is shown in the retracted position.
- FIG 2A shows surgical apparatus 200, surgical instrument 102, and surgical tool 104.
- Surgical instrument 102 includes housing 108, extended housing portion 216, cannula 120, brush 146, first coil 112, second coil 114, electrical conductor 220, and drive interface 154.
- the surgical tool includes shaft 130, slots 116, additional slots 148, longitudinal member 132, first rotor 134, second rotor 144, inner alignment piece 212, locking member 210, locking ring 208, and drive coupling 152.
- Shaft 130 is contained within cannula 120, and kept separate from the cannula by inner alignment piece 212.
- the shaft has drive coupling 152 attached to the shaft at a proximal end of the shaft.
- the shaft contains within it longitudinal member 132. Attached at the proximal end of longitudinal member 132 are first rotor 134 and second rotor 144. Slots 116 and additional slots 148 permit the longitudinal motion of the longitudinal member and the attached rotors with respect to the shaft.
- Located adjacent to drive coupling 152 is drive interface 154.
- the cannula, inner alignment piece, shaft, and longitudinal member are held in alignment at their proximal ends to extended housing portion 216 by locking member 210 and locking ring 208.
- the locking member also has a notch 206, which is located opposite a detent 204 located on an interior surface of the extended housing portion.
- the locking member additionally includes outer o-ring seal 202, located between the locking member exterior surface and the extended housing portion interior surface.
- the extended housing portion includes exterior threads 214A, located so as to be opposite interior threads 214B, which are located on locking ring 208.
- cannula 120 , inner alignment piece 212, shaft 130, and longitudinal member 132 are held in alignment at their proximal ends to extended housing portion 216 by locking member 210 and locking ring 208.
- the inner alignment piece serves to locate the shaft within the cannula, and also serves as a bearing for the shaft.
- Locking member 210 serves to locate the inner alignment piece within extended housing portion 216 through the engagement of notch 206 on the locking member and detent 204 on the interior of the extended housing portion.
- Locking ring 208 serves to secure the locking member, together with the cannula, inner alignment piece, shaft, and longitudinal member, within the extended housing portion.
- the locking ring accomplishes this via the cooperative action of its interior threads 214B and exterior threads 214A, which are located on the exterior surface of the extended housing portion.
- Drive interface 154 engages drive coupling 152 to impart a surgical motion to shaft 130.
- Outer O-ring seal 202 serves to prevent transmission of fluids.
- Either first coil 112 or second coil 114 can be energized to move longitudinal member 132 along the longitudinal axis of the shaft, thereby extending or retracting the longitudinal member.
- the longitudinal member is shown in the retracted position, with the first rotor 134 aligned within the first coil 112.
- the movement of longitudinal member 132 is induced through the magnetic coupling between either of coils 112 or 114 and first rotor 134.
- the distal end 136 of the longitudinal member is energized by a power supply via electrical conductor 220, brush 146, and second rotor 144. This produces a cauterizing action at the distal end of the longitudinal member.
- FIG. 2B shows a cross-section of the embodiment shown in FIG. 2A.
- Power source 230 supplies power to brush 146 via foot switch 232, and electrical conductor 220.
- this cross-section there is no coupling between brush 146 and second rotor 144, thus leaving longitudinal member 132 unenergized.
- o-ring seals 240, 242, and 244 which serve to prevent transmission of fluids along the shaft or longitudinal member.
- FIG 3 A shows a isometric view of the embodiment of surgical apparatus 300 shown in FIG. 2 A in the energized position.
- the components, structure, and operation of the embodiment shown in FIG. 3 A are identical to those shown in FIG. 2A with the following exception.
- FIG. 3 A shows the embodiment of FIG. 2A in the energized position, with the longitudinal member extended.
- the longitudinal member is shown in the extended position, with the first rotor 134 aligned within the second coil 114.
- the movement of longitudinal member 132 is induced through the magnetic coupling between second 114 and first rotor 134.
- FIG 3B. shows a cross-sectional view of the embodiment shown in FIG. 3 A.
- the components, structure, and operation of the embodiment shown in FIG. 3A are identical to those shown in FIG.
- FIG. 4 A shows surgical apparatus 400, with details of the tip and the longitudinal member in the retracted position. Shown are tip 142, distal end 136 of the longitudinal member, cannula 120, and opening 138.
- Cannula 120 defines at its distal end an opening 138. Tip 142 is located within the opening. The tip contains within it distal end 136 of the longitudinal member.
- FIG. 4B shows a cross-sectional view of surgical apparatus 400 shown in FIG. 4A, with details of the tip and the longitudinal member in the retracted position. Shown are shaft 130, inner alignment piece 212, tip 142, longitudinal member 132, distal end 136 of the longitudinal member, cannula 120, longitudinal annulus 406, insulating layer 408, and opening 138. Also shown are distal o-ring seal 404, and tip o-ring seal 412.
- Cannula 120 defines at its distal end an opening 138. Tip 142 is located within the opening.
- Shaft 130 is contained within cannula 120, is kept separate from the cannula by inner alignment piece 212, and is attached to the tip at the distal end of the shaft.
- the shaft contains within it longitudinal annulus 406. Within the longitudinal annulus is the longitudinal member 132, which is contained within insulating layer 408.
- the tip contains within it distal end 136 of the longitudinal member.
- the distal end of the shaft also includes distal O- ring seat 402.
- Distal O-ring seal 404 is located within the distal o-ring seat, and is in contact with the interior surface of the inner alignment piece.
- the tip also includes tip O-ring seat 410.
- Tip O-ring seal 412 is located within the tip o- ring seat, and is in contact with the exterior surface of the insulating layer. In operation, a surgical motion may be imparted to tip 142 by shaft 130.
- Distal end 136 of longitudinal member 132 is shown in the retracted, unenergized position. Together shaft 130, inner alignment piece 212, distal O- ring seat 402, distal O-ring seal 404, tip O-ring seat 410, and tip O-ring seal 412 serve to produce a seal that prevents transmission of fluids.
- FIG. 5 A shows surgical apparatus 500, with details of the tip and the longitudinal member in the extended position. Shown are tip 142, distal end 136 of the longitudinal member, insulating layer 408, cannula 120, and opening 138.
- Cannula 120 defines at its distal end an opening 138. Tip 142 is located within the opening. The tip contains within it distal end 136 of the longitudinal member, which is partially surrounded by insulating layer 408.
- FIG. 5B shows a cross-sectional view of the surgical apparatus shown in
- FIG. 5 A shows details of the tip and the longitudinal member in the extended position.
- the components, structure, and operation of the embodiment shown in FIG. 5B are identical to those shown in FIG. 4B with the following exception.
- FIG. 5B shows the embodiment of FIG. 4B in the energized position, with the longitudinal member extended.
- FIG. 6 shows an end-on view of one embodiment of tip 142 according to the invention. Shown are distal end 136 of the longitudinal member, insulating layer 408, longitudinal annulus 406, inner alignment piece 212, and cutting edges 601. Tip 142 contains within it alignment piece 212, longitudinal annulus 406, and distal end 136 of the longitudinal member, which is partially surrounded by insulating layer 408. Cutting edges 601 are present on tip 142.
- a surgical motion may be imparted to tip 142, with cutting edges 601 performing cutting action.
- distal end 136 of the longitudinal member is extended, thus permitting a cauterizing action at the distal end of the longitudinal member.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU95714/98A AU9571498A (en) | 1997-09-19 | 1998-09-18 | Electro-surgical cutting and cauterizing tool |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5938397P | 1997-09-19 | 1997-09-19 | |
US60/059,383 | 1997-09-19 | ||
US09/034,885 | 1998-03-04 | ||
US09/034,885 US6007533A (en) | 1997-09-19 | 1998-03-04 | Electrocauterizing tip for orthopedic shave devices |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999013790A1 WO1999013790A1 (en) | 1999-03-25 |
WO1999013790A9 true WO1999013790A9 (en) | 1999-06-17 |
Family
ID=26711526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/019573 WO1999013790A1 (en) | 1997-09-19 | 1998-09-18 | Electro-surgical cutting and cauterizing tool |
Country Status (3)
Country | Link |
---|---|
US (1) | US6007533A (en) |
AU (1) | AU9571498A (en) |
WO (1) | WO1999013790A1 (en) |
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-
1998
- 1998-03-04 US US09/034,885 patent/US6007533A/en not_active Expired - Lifetime
- 1998-09-18 WO PCT/US1998/019573 patent/WO1999013790A1/en active Application Filing
- 1998-09-18 AU AU95714/98A patent/AU9571498A/en not_active Abandoned
Also Published As
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US6007533A (en) | 1999-12-28 |
WO1999013790A1 (en) | 1999-03-25 |
AU9571498A (en) | 1999-04-05 |
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