US20070043346A1 - Radiation applicator for microwave medical treatment - Google Patents
Radiation applicator for microwave medical treatment Download PDFInfo
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- US20070043346A1 US20070043346A1 US10/561,701 US56170104A US2007043346A1 US 20070043346 A1 US20070043346 A1 US 20070043346A1 US 56170104 A US56170104 A US 56170104A US 2007043346 A1 US2007043346 A1 US 2007043346A1
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- radiation
- applicator
- dielectric body
- antenna
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- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/02—Radiation therapy using microwaves
- A61N5/04—Radiators for near-field treatment
- A61N5/045—Radiators for near-field treatment specially adapted for treatment inside the body
-
- 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
- A61B2018/183—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 characterised by the type of antenna
-
- 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
-
- 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
- A61B2018/1869—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 interstitially inserted into the body, e.g. needles
-
- 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
- A61B2018/1892—Details of electrical isolations of the antenna
Definitions
- This invention relates to radiation applicators and, in particular, to microwave medical treatment devices.
- a known radiation applicator used for microwave medical treatment is shown in PCT/GB00/00682 and comprises a generator which supplies microwave energy via a coaxial conductor to a tip region at the distal end of the conductor.
- Dielectric packing is provided between the inner and outer conductors of the coaxial conductor but a length of the inner conductor at the tip projects beyond the outer conductor so as to form an antenna to emit radiation.
- the antenna is embedded axially in a cylindrical body of dielectric which has the same outer diameter as the coaxial conductor.
- a pointed tip at the end of the dielectric body serves to assist penetration into biological matter, such as a liver to perform ablation on a tumour.
- a radiation applicator has a power input at one end, an elongate antenna extending axially at its distal end for emitting radiation into surrounding material, and a dielectric body which surrounds the antenna, characterised in that the dielectric body consists of multiple sections of different dielectric constant which are located axially relative to one another along the antenna.
- the dielectric constant of each section of the dielectric body is selected so as to tune the applicator to operate at a particular frequency or range of frequencies for optimum performance in transferring energy to the surrounding material of predetermined dielectric constant.
- energy transfer from the applicator to the surrounding material may change the physical properties of that material and the sectioned nature of the dielectric body may, in some embodiments, permit a broadband match of the applicator to the surrounding material so as to allow efficient energy transfer to the material to continue despite changes in the properties of the material.
- the dielectric body consists of three consecutive sections: a first section adjacent the power unit, a second first section adapted to be the major emitter of radiation, and a third tipsection.
- the second section has a higher dielectric constant than the first section.
- the higher dielectric constant of the second section allows the overall length of the dielectric body to be made shorter than would otherwise be required if the dielectric body was composed entirely of the material of the first dielectric, the length being related to the wavelength of the radiation in the dielectric.
- the third, tip section is composed entirely of a material with a dielectric value from the other two sections and is chosen as a match to the surrounding material. The use of multiple sections of different dielectric constant allows the reflections from the dielectric interfaces to be used for matching or turning at the power input to ensure optimum power transfer.
- the dielectric body has a tip section furthest from the power input which is pointed so as to penetrate the surrounding material in use.
- the fact that the tip is composed of a dielectric material and not an electrical conductor serves to avoid local surface heating.
- the dielectric constant of the tip is less than that of the second section, and is preferably intermediate that of the first and second sections.
- the multiple sections could be made as an integral body, or made as separate components assembled together to abut against one another end-to-end.
- a radiation reflector is provided at the interface between sections of the dielectric body so as to modulate the transmission of radiation and further tune the applicator.
- a radiation reflector is provided each side of the section which is intended to emit radiation into the surrounding material, a reflector on that side further from the input end having a larger area so as to reflect more energy than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator.
- the emission of radiation from the dielectric body can therefore be more localised in one section.
- the invention is designed to radiate more energy from the second section.
- a radiation applicator has a power input at one end, an elongate antenna extending axially at its distal end for emitting radiation into surrounding material, and a dielectric body which surrounds the antenna, characterised in that one or more radiation reflectors are located axially along the antenna within the dielectric body to modulate the transmission of radiation.
- two radiation reflectors are spaced apart with the intermediate section of the dielectric body being intended to emit radiation into the surrounding material, the reflector on one side further from the input having a larger area so as to reflect more radiation than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator.
- the reflectors are located at the interface between separate abutting sections of the dielectric body and help give structural support to the applicator.
- the reflectors can be soldered or otherwise bonded to sections of the dielectric body and antenna
- FIG. 1 shows an axially section through the tip of the radiation applicator according to the invention
- FIG. 2 shows a graph of reflected radiation at the input of the radiation applicator of FIG. 1 against the input frequency.
- the radiation applicator illustrated in FIG. 1 comprises a coaxial conductor 1 , which may be rigid or flexible, and which is connected to a microwave power supply at one end (not shown) and terminates at its other end in a radiation emitting tip 2 .
- the tip 2 consists of a cylindrical dielectric body composed of three sections 3 , 4 , 5 , coaxially aligned and abutting one another at interfaces between them so as to form a continuous body.
- One outer section 3 is connected to the end of the coaxial conductor 1 .
- a portion 6 of the section 3 at one end is of reduced diameter and is inserted a short distance into the outer conductor 7 of the coaxial conductor to make a secure connection.
- the central conductor 8 of the coaxial conductor extends through an axial hole 9 in the body 2 , through all three sections but terminating within the outer third section 5 .
- a metal washer 10 is soldered to the section 3 at the interface with section 4 , and is soldered to the central conductor 8 ; and a second metal washer 11 is soldered to the middle section 4 at the interface with the third section 5 , and is soldered to the central conductor 8 .
- the washers 10 and 11 therefore serve to secure the two sections 3 and 4 of the dielectric body to the end of the coaxial conductor 1 via the central conductor 8 .
- the third section 5 is then bonded to the second washer 11 and central conductor 8 .
- the third section 5 of the applicator has a pointed shape to assist insertion into material to be treated, and this will be made as sharp as is necessary for the application, for example, the treatment of liver cancer.
- That portion of the central conductor 8 that extends from the outer conductor 7 acts as an antenna to emit radiation.
- the wavelength of the radiation within the dielectric body is determined by the frequency of the power supply and the dielectric constant of the various components. Thus the wavelength of the radiation is different in each of the three sections 3 , 4 and 5 .
- the metal gaskets 10 and 11 which act as radiation reflectors. Both gaskets serve to reflect radiation back to the input, and with appropriate matching at the input ensures a maximum transfer of energy to the tip 2 .
- the gasket 11 has a larger surface area than the gasket 10 so as to reduce the amount of energy transmitted to the third section 5 .
- a radiation applicator designed for medical use has the dimensions shown in FIG. 1 and the following further specifications: the washer 10 has an outer diameter of 1.9 mm; the washer 11 has an outer diameter of 2.7 mm; the central conductor 8 protrudes beyond the outer conductor by 8.5 mm; and the dielectric sections 3 , 4 , 5 are composed, respectively, of alumina with dielectric constant 10 , titanium oxide with dielectric constant 100 and a Ca—Ti—Nd—Al dielectric with dielectric constant 47 .
- the applicator of this example is capable of operating well at frequencies in the vicinity of 3 GHz. In particular, the applicator of this example is especially suited to operation at a frequency of 2.45 GHz and a power of 50 W.
- FIG. 2 The performance of the applicator of the above example is illustrated in FIG. 2 .
- This shows the power reflected from the tip of the applicator against the operating frequency, and shows that there is a dip in the reflected power at about 2.45 GHz, which corresponds to a maximum transfer of energy to the tip at this frequency.
- the width of the dip in FIG. 2 which is about 0.6 GHz, gives the applicator a broadband characteristic which allows it to better accommodate use with surrounding materials with a range of dielectric constant values.
- dielectric materials may be used, including air, and instead of three dielectric sections there may be just two or may be four or more. Grooves may be formed in the outer surface of each or any of the dielectric section circumferentially. Also, the dielectric sections may be tapered longitudinally.
- an imaging process could be used to guide the applicator to the desired location.
- the applicator may be of small enough diameter to be inserted through a guidewire, such as used in ultrasound imaging techniques, so as to ensure accurate treatment in use.
Abstract
A radiation applicator with a dielectric body (2) surrounding the antenna The dielectric body (2) is comprised of three sections (3, 4 and 5) with different dielectric constants to provide broad-band matching of the applicator to surrounding material. Washers (10) and (11) are mounted on the antenna to act as reflectors.
Description
- This invention relates to radiation applicators and, in particular, to microwave medical treatment devices.
- A known radiation applicator used for microwave medical treatment is shown in PCT/GB00/00682 and comprises a generator which supplies microwave energy via a coaxial conductor to a tip region at the distal end of the conductor. Dielectric packing is provided between the inner and outer conductors of the coaxial conductor but a length of the inner conductor at the tip projects beyond the outer conductor so as to form an antenna to emit radiation. The antenna is embedded axially in a cylindrical body of dielectric which has the same outer diameter as the coaxial conductor. A pointed tip at the end of the dielectric body serves to assist penetration into biological matter, such as a liver to perform ablation on a tumour.
- According to one aspect of the invention, a radiation applicator has a power input at one end, an elongate antenna extending axially at its distal end for emitting radiation into surrounding material, and a dielectric body which surrounds the antenna, characterised in that the dielectric body consists of multiple sections of different dielectric constant which are located axially relative to one another along the antenna.
- The dielectric constant of each section of the dielectric body is selected so as to tune the applicator to operate at a particular frequency or range of frequencies for optimum performance in transferring energy to the surrounding material of predetermined dielectric constant. For example, energy transfer from the applicator to the surrounding material may change the physical properties of that material and the sectioned nature of the dielectric body may, in some embodiments, permit a broadband match of the applicator to the surrounding material so as to allow efficient energy transfer to the material to continue despite changes in the properties of the material.
- Preferably, the dielectric body consists of three consecutive sections: a first section adjacent the power unit, a second first section adapted to be the major emitter of radiation, and a third tipsection. The second section has a higher dielectric constant than the first section. The higher dielectric constant of the second section allows the overall length of the dielectric body to be made shorter than would otherwise be required if the dielectric body was composed entirely of the material of the first dielectric, the length being related to the wavelength of the radiation in the dielectric. The third, tip section, is composed entirely of a material with a dielectric value from the other two sections and is chosen as a match to the surrounding material. The use of multiple sections of different dielectric constant allows the reflections from the dielectric interfaces to be used for matching or turning at the power input to ensure optimum power transfer.
- Preferably, the dielectric body has a tip section furthest from the power input which is pointed so as to penetrate the surrounding material in use. The fact that the tip is composed of a dielectric material and not an electrical conductor serves to avoid local surface heating. Preferably, the dielectric constant of the tip is less than that of the second section, and is preferably intermediate that of the first and second sections.
- The multiple sections could be made as an integral body, or made as separate components assembled together to abut against one another end-to-end.
- According to a further feature of the invention, a radiation reflector is provided at the interface between sections of the dielectric body so as to modulate the transmission of radiation and further tune the applicator. Preferably, a radiation reflector is provided each side of the section which is intended to emit radiation into the surrounding material, a reflector on that side further from the input end having a larger area so as to reflect more energy than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator. The emission of radiation from the dielectric body can therefore be more localised in one section. Preferably, the invention is designed to radiate more energy from the second section.
- According to a second aspect of the invention, a radiation applicator has a power input at one end, an elongate antenna extending axially at its distal end for emitting radiation into surrounding material, and a dielectric body which surrounds the antenna, characterised in that one or more radiation reflectors are located axially along the antenna within the dielectric body to modulate the transmission of radiation.
- Preferably, two radiation reflectors are spaced apart with the intermediate section of the dielectric body being intended to emit radiation into the surrounding material, the reflector on one side further from the input having a larger area so as to reflect more radiation than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator.
- Preferably, the reflectors, as used in connection with either the first or second aspect of the invention, are located at the interface between separate abutting sections of the dielectric body and help give structural support to the applicator. For example, the reflectors can be soldered or otherwise bonded to sections of the dielectric body and antenna
- The invention will now be described by way of example with reference to the accompanying drawings in which:
-
FIG. 1 shows an axially section through the tip of the radiation applicator according to the invention, and -
FIG. 2 shows a graph of reflected radiation at the input of the radiation applicator ofFIG. 1 against the input frequency. - The radiation applicator illustrated in
FIG. 1 comprises acoaxial conductor 1, which may be rigid or flexible, and which is connected to a microwave power supply at one end (not shown) and terminates at its other end in aradiation emitting tip 2. Thetip 2 consists of a cylindrical dielectric body composed of threesections outer section 3 is connected to the end of thecoaxial conductor 1. Aportion 6 of thesection 3 at one end is of reduced diameter and is inserted a short distance into theouter conductor 7 of the coaxial conductor to make a secure connection. Thecentral conductor 8 of the coaxial conductor extends through anaxial hole 9 in thebody 2, through all three sections but terminating within the outerthird section 5. During assembly, ametal washer 10 is soldered to thesection 3 at the interface withsection 4, and is soldered to thecentral conductor 8; and asecond metal washer 11 is soldered to themiddle section 4 at the interface with thethird section 5, and is soldered to thecentral conductor 8. Thewashers sections coaxial conductor 1 via thecentral conductor 8. Thethird section 5 is then bonded to thesecond washer 11 andcentral conductor 8. - The
third section 5 of the applicator has a pointed shape to assist insertion into material to be treated, and this will be made as sharp as is necessary for the application, for example, the treatment of liver cancer. - In operation, that portion of the
central conductor 8 that extends from theouter conductor 7, acts as an antenna to emit radiation. The wavelength of the radiation within the dielectric body is determined by the frequency of the power supply and the dielectric constant of the various components. Thus the wavelength of the radiation is different in each of the threesections - Another factor which affects the tuning of the applicator is the
metal gaskets tip 2. Thegasket 11 has a larger surface area than thegasket 10 so as to reduce the amount of energy transmitted to thethird section 5. - Other factors which affect tuning are the length of the
central conductor 8 extending beyond theouter conductor 7, the diameter and axial length of the individualdielectric sections washers - It will be appreciated that the choice of dielectric materials and dimensions of the various components allows great flexibility in designing a radiation applicator to suit a wide range of applications and performance requirements, bearing in mind that the dielectric constant of the surrounding material when the device is in use, will effect performance.
- For example, a radiation applicator designed for medical use has the dimensions shown in
FIG. 1 and the following further specifications: thewasher 10 has an outer diameter of 1.9 mm; thewasher 11 has an outer diameter of 2.7 mm; thecentral conductor 8 protrudes beyond the outer conductor by 8.5 mm; and thedielectric sections dielectric constant 10, titanium oxide with dielectric constant 100 and a Ca—Ti—Nd—Al dielectric with dielectric constant 47. The applicator of this example is capable of operating well at frequencies in the vicinity of 3 GHz. In particular, the applicator of this example is especially suited to operation at a frequency of 2.45 GHz and a power of 50 W. - The performance of the applicator of the above example is illustrated in
FIG. 2 . This shows the power reflected from the tip of the applicator against the operating frequency, and shows that there is a dip in the reflected power at about 2.45 GHz, which corresponds to a maximum transfer of energy to the tip at this frequency. The width of the dip inFIG. 2 , which is about 0.6 GHz, gives the applicator a broadband characteristic which allows it to better accommodate use with surrounding materials with a range of dielectric constant values. - In alternative embodiments of the invention, other dielectric materials may be used, including air, and instead of three dielectric sections there may be just two or may be four or more. Grooves may be formed in the outer surface of each or any of the dielectric section circumferentially. Also, the dielectric sections may be tapered longitudinally.
- Also, an imaging process could be used to guide the applicator to the desired location. The applicator may be of small enough diameter to be inserted through a guidewire, such as used in ultrasound imaging techniques, so as to ensure accurate treatment in use.
Claims (14)
1. A radiation applicator having one end and an opposite distal end, the radiation applicator comprising:
a power input at said one end,
an elongate antenna extending axially of the applicator at said distal end, and
a dielectric body which surrounds the antenna and serves to emit radiation radially of the dielectric body into surrounding material, the dielectric body comprising multiple sections of different dielectric constant which are located axially relative to one another along the antenna.
2. An applicator as claimed in claim 1 in which, the dielectric body consists of a second section adapted to emit radiation, and a first section between the second section and the power input, and having a lower dielectric constant than the first section.
3. An applicator as claimed in claim 2 in which the dielectric body has an outer section furthest from the power input having a dielectric constant lower than that of the second section.
4. An applicator as claimed in claim 3 in which the outer section has a dielectric constant intermediate that of the first and second sections.
5. An applicator as claimed in claim 1 in which, the multiple sections are made as separate components and are assembled to abut against one another end-to-end.
6. An applicator as claimed in claim 1 in which, a radiation reflector is provided at the interface between two sections of the dielectric body so as to modulate the transmission of radiation and tune the applicator.
7. An applicator as claimed in claim 6 in which, a radiation reflector is provided each side of a section which is intended to emit radiation into the surrounding material, a reflector on that side further from the input end having a larger area so as to reflect more energy than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator.
8. A radiation applicator having one end and an opposite distal end, the radiation applicator comprising:
a power input at said one end,
an elongate antenna extending axially at said distal end for emitting radiation into surrounding material,
a dielectric body which surrounds the antenna, and
a plurality of radiation reflectors located axially along the antenna within the dielectric body to modulate the transmission of radiation, wherein two radiation reflectors are axially spaced apart with an intermediate section of the dielectric body disposed between said two radiation reflectors and intended to emit radiation radially into the surrounding material, the reflector on one side further from the input having a larger area so as to reflect more radiation than the reflector nearer the input end, thereby reducing transmission of radiation to the tip of the applicator.
9. An applicator as claimed in claim 6 in which, the reflector is located at an interface between separate sections of the dielectric body and gives structural support to the applicator.
10. An applicator as claimed in claim 1 in which an outer end of the dielectric body furthest from the power input is pointed.
11. An applicator as claimed in claim 1 in which the power input comprises a coaxial conductor having a central conductor and an outer conductor, and in which the central conductor extends from the outer conductor to form said elongate antenna.
12. An applicator as claimed in claim 11 in which the dielectric body has a reduced diameter and which is inserted into an open end of the outer conductor.
13. A radiation applicator having one end and an opposite distal end, the radiation applicator comprising:
a power input at said one end,
an elongate antenna extending axially at said distal end for emitting radiation into surrounding material, and
a dielectric body which surrounds the antenna, wherein the antenna extends through a hole in a section of said dielectric body and through a hole in a radiation reflector attached to an axial end face of said section of dielectric body, and said radiation reflector is attached to the antenna so as to give structural support to the applicator.
14. A radiation applicator having one end and an opposite distal end, the radiation applicator comprising:
a power input at said one end,
an elongate antenna extending axially of the applicator at said distal end, and
a dielectric body which surrounds the antenna and serves to emit radiation radially of the antenna into surrounding material, wherein the dielectric body comprises multiple sections of different dielectric constant which are located axially relative to one another along the antenna.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/683,047 US9161811B2 (en) | 2003-06-23 | 2012-11-21 | Radiation applicator for microwave medical treatment |
US14/857,915 US9770295B2 (en) | 2003-06-23 | 2015-09-18 | Radiation applicator for microwave medical treatment |
US15/684,315 US10772682B2 (en) | 2003-06-23 | 2017-08-23 | Radiation applicator for microwave medical treatment |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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GB0314631.3 | 2003-06-23 | ||
GB0314631A GB2403148C2 (en) | 2003-06-23 | 2003-06-23 | Radiation applicator |
PCT/GB2004/002620 WO2004112628A1 (en) | 2003-06-23 | 2004-06-18 | Radiation applicator for microwave medical treatment |
Publications (1)
Publication Number | Publication Date |
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US20070043346A1 true US20070043346A1 (en) | 2007-02-22 |
Family
ID=27637182
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
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US10/561,701 Abandoned US20070043346A1 (en) | 2003-06-23 | 2004-06-18 | Radiation applicator for microwave medical treatment |
US13/683,047 Active 2026-09-29 US9161811B2 (en) | 2003-06-23 | 2012-11-21 | Radiation applicator for microwave medical treatment |
US14/857,915 Active US9770295B2 (en) | 2003-06-23 | 2015-09-18 | Radiation applicator for microwave medical treatment |
US15/684,315 Active US10772682B2 (en) | 2003-06-23 | 2017-08-23 | Radiation applicator for microwave medical treatment |
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Application Number | Title | Priority Date | Filing Date |
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US13/683,047 Active 2026-09-29 US9161811B2 (en) | 2003-06-23 | 2012-11-21 | Radiation applicator for microwave medical treatment |
US14/857,915 Active US9770295B2 (en) | 2003-06-23 | 2015-09-18 | Radiation applicator for microwave medical treatment |
US15/684,315 Active US10772682B2 (en) | 2003-06-23 | 2017-08-23 | Radiation applicator for microwave medical treatment |
Country Status (14)
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US (4) | US20070043346A1 (en) |
EP (1) | EP1646324B1 (en) |
JP (1) | JP4559418B2 (en) |
CN (1) | CN100558311C (en) |
AT (1) | ATE464013T1 (en) |
AU (1) | AU2004248967B2 (en) |
CA (1) | CA2530154A1 (en) |
DE (1) | DE602004026588D1 (en) |
GB (3) | GB2403148C2 (en) |
MX (1) | MXPA05014207A (en) |
MY (1) | MY136363A (en) |
TW (1) | TWI278301B (en) |
WO (1) | WO2004112628A1 (en) |
ZA (1) | ZA200600591B (en) |
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US10186780B2 (en) | 2014-05-05 | 2019-01-22 | Per Olov Risman | Microwave antenna applicator |
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GB2403148C2 (en) * | 2003-06-23 | 2013-02-13 | Microsulis Ltd | Radiation applicator |
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US10363092B2 (en) | 2006-03-24 | 2019-07-30 | Neuwave Medical, Inc. | Transmission line with heat transfer ability |
US8672932B2 (en) | 2006-03-24 | 2014-03-18 | Neuwave Medical, Inc. | Center fed dipole for use with tissue ablation systems, devices and methods |
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US10376314B2 (en) | 2006-07-14 | 2019-08-13 | Neuwave Medical, Inc. | Energy delivery systems and uses thereof |
PL2043543T3 (en) | 2006-07-14 | 2020-03-31 | Neuwave Medical, Inc. | Energy delivery system |
US8068921B2 (en) * | 2006-09-29 | 2011-11-29 | Vivant Medical, Inc. | Microwave antenna assembly and method of using the same |
GB0624658D0 (en) | 2006-12-11 | 2007-01-17 | Medical Device Innovations Ltd | Electrosurgical ablation apparatus and a method of ablating biological tissue |
JP4618241B2 (en) * | 2006-12-13 | 2011-01-26 | 株式会社村田製作所 | Coaxial probe device |
US20090005766A1 (en) * | 2007-06-28 | 2009-01-01 | Joseph Brannan | Broadband microwave applicator |
US20090082762A1 (en) * | 2007-09-20 | 2009-03-26 | Ormsby Theodore C | Radio frequency energy transmission device for the ablation of biological tissues |
US9622813B2 (en) | 2007-11-01 | 2017-04-18 | Covidien Lp | Method for volume determination and geometric reconstruction |
US8280525B2 (en) | 2007-11-16 | 2012-10-02 | Vivant Medical, Inc. | Dynamically matched microwave antenna for tissue ablation |
US8292880B2 (en) | 2007-11-27 | 2012-10-23 | Vivant Medical, Inc. | Targeted cooling of deployable microwave antenna |
US8131339B2 (en) | 2007-11-27 | 2012-03-06 | Vivant Medical, Inc. | System and method for field ablation prediction |
US9057468B2 (en) | 2007-11-27 | 2015-06-16 | Covidien Lp | Wedge coupling |
US8945111B2 (en) | 2008-01-23 | 2015-02-03 | Covidien Lp | Choked dielectric loaded tip dipole microwave antenna |
US8435237B2 (en) | 2008-01-29 | 2013-05-07 | Covidien Lp | Polyp encapsulation system and method |
US8262703B2 (en) | 2008-01-31 | 2012-09-11 | Vivant Medical, Inc. | Medical device including member that deploys in a spiral-like configuration and method |
US8353902B2 (en) | 2008-01-31 | 2013-01-15 | Vivant Medical, Inc. | Articulating ablation device and method |
US9949794B2 (en) | 2008-03-27 | 2018-04-24 | Covidien Lp | Microwave ablation devices including expandable antennas and methods of use |
US9198723B2 (en) | 2008-03-31 | 2015-12-01 | Covidien Lp | Re-hydration antenna for ablation |
US8246614B2 (en) | 2008-04-17 | 2012-08-21 | Vivant Medical, Inc. | High-strength microwave antenna coupling |
US9271796B2 (en) | 2008-06-09 | 2016-03-01 | Covidien Lp | Ablation needle guide |
US8192427B2 (en) | 2008-06-09 | 2012-06-05 | Tyco Healthcare Group Lp | Surface ablation process with electrode cooling methods |
US8834409B2 (en) | 2008-07-29 | 2014-09-16 | Covidien Lp | Method for ablation volume determination and geometric reconstruction |
US9173706B2 (en) | 2008-08-25 | 2015-11-03 | Covidien Lp | Dual-band dipole microwave ablation antenna |
US8211098B2 (en) * | 2008-08-25 | 2012-07-03 | Vivant Medical, Inc. | Microwave antenna assembly having a dielectric body portion with radial partitions of dielectric material |
US8251987B2 (en) | 2008-08-28 | 2012-08-28 | Vivant Medical, Inc. | Microwave antenna |
US8394086B2 (en) | 2008-09-03 | 2013-03-12 | Vivant Medical, Inc. | Microwave shielding apparatus |
US8403924B2 (en) | 2008-09-03 | 2013-03-26 | Vivant Medical, Inc. | Shielding for an isolation apparatus used in a microwave generator |
US9113624B2 (en) | 2008-10-15 | 2015-08-25 | Covidien Lp | System and method for perfusing biological organs |
US9113924B2 (en) * | 2008-10-17 | 2015-08-25 | Covidien Lp | Choked dielectric loaded tip dipole microwave antenna |
US8197473B2 (en) | 2009-02-20 | 2012-06-12 | Vivant Medical, Inc. | Leaky-wave antennas for medical applications |
US8202270B2 (en) | 2009-02-20 | 2012-06-19 | Vivant Medical, Inc. | Leaky-wave antennas for medical applications |
US9277969B2 (en) | 2009-04-01 | 2016-03-08 | Covidien Lp | Microwave ablation system with user-controlled ablation size and method of use |
US10045819B2 (en) | 2009-04-14 | 2018-08-14 | Covidien Lp | Frequency identification for microwave ablation probes |
US8353903B2 (en) | 2009-05-06 | 2013-01-15 | Vivant Medical, Inc. | Power-stage antenna integrated system |
US8216227B2 (en) | 2009-05-06 | 2012-07-10 | Vivant Medical, Inc. | Power-stage antenna integrated system with junction member |
US8463396B2 (en) | 2009-05-06 | 2013-06-11 | Covidien LLP | Power-stage antenna integrated system with high-strength shaft |
US8292881B2 (en) | 2009-05-27 | 2012-10-23 | Vivant Medical, Inc. | Narrow gauge high strength choked wet tip microwave ablation antenna |
US8834460B2 (en) | 2009-05-29 | 2014-09-16 | Covidien Lp | Microwave ablation safety pad, microwave safety pad system and method of use |
US8552915B2 (en) | 2009-06-19 | 2013-10-08 | Covidien Lp | Microwave ablation antenna radiation detector |
DK2459096T3 (en) | 2009-07-28 | 2015-01-19 | Neuwave Medical Inc | ablation device |
USD634010S1 (en) | 2009-08-05 | 2011-03-08 | Vivant Medical, Inc. | Medical device indicator guide |
US8328800B2 (en) | 2009-08-05 | 2012-12-11 | Vivant Medical, Inc. | Directive window ablation antenna with dielectric loading |
US9031668B2 (en) | 2009-08-06 | 2015-05-12 | Covidien Lp | Vented positioner and spacer and method of use |
US8328801B2 (en) | 2009-08-17 | 2012-12-11 | Vivant Medical, Inc. | Surface ablation antenna with dielectric loading |
US8409187B2 (en) | 2009-09-08 | 2013-04-02 | Covidien Lp | Microwave antenna probe with high-strength ceramic coupler |
US8355803B2 (en) | 2009-09-16 | 2013-01-15 | Vivant Medical, Inc. | Perfused core dielectrically loaded dipole microwave antenna probe |
US8394087B2 (en) | 2009-09-24 | 2013-03-12 | Vivant Medical, Inc. | Optical detection of interrupted fluid flow to ablation probe |
US8906007B2 (en) | 2009-09-28 | 2014-12-09 | Covidien Lp | Electrosurgical devices, directional reflector assemblies coupleable thereto, and electrosurgical systems including same |
JP5711882B2 (en) * | 2009-12-28 | 2015-05-07 | 国立大学法人滋賀医科大学 | Medical treatment tool |
EP3804651A1 (en) | 2010-05-03 | 2021-04-14 | Neuwave Medical, Inc. | Energy delivery systems |
US20110319880A1 (en) * | 2010-06-25 | 2011-12-29 | Vivant Medical, Inc | Microwave Ground Plane Antenna Probe |
USD673685S1 (en) | 2010-09-08 | 2013-01-01 | Vivant Medical, Inc. | Microwave device spacer and positioner with arcuate slot |
US8945144B2 (en) | 2010-09-08 | 2015-02-03 | Covidien Lp | Microwave spacers and method of use |
US8968289B2 (en) | 2010-10-22 | 2015-03-03 | Covidien Lp | Microwave spacers and methods of use |
AU2012239878B2 (en) | 2011-04-08 | 2015-01-29 | Covidien Lp | Flexible microwave catheters for natural or artificial lumens |
GB201121436D0 (en) * | 2011-12-14 | 2012-01-25 | Emblation Ltd | A microwave applicator and method of forming a microwave applicator |
CN107224325B (en) | 2011-12-21 | 2020-09-01 | 纽华沃医药公司 | Energy delivery system and use thereof |
US9119648B2 (en) | 2012-01-06 | 2015-09-01 | Covidien Lp | System and method for treating tissue using an expandable antenna |
US9113931B2 (en) | 2012-01-06 | 2015-08-25 | Covidien Lp | System and method for treating tissue using an expandable antenna |
CN102697557B (en) * | 2012-06-06 | 2014-12-31 | 王建新 | Cervical microwave thermotherapy radiator |
WO2017075067A1 (en) | 2015-10-26 | 2017-05-04 | Neuwave Medical, Inc. | Energy delivery systems and uses thereof |
JP2018534108A (en) | 2015-10-26 | 2018-11-22 | ニューウェーブ メディカル, インコーポレイテッドNeuwave Medical, Inc. | Apparatus for securing medical devices and related methods |
US20180325413A1 (en) | 2015-11-09 | 2018-11-15 | Opr Mikrovågsteknik Ekonomisk Förening | Quantification of inhomogeneities in objects by electromagnetic fields |
GB2545179B (en) * | 2015-12-07 | 2020-09-09 | Creo Medical Ltd | Electrosurgical instrument |
GB2545465A (en) * | 2015-12-17 | 2017-06-21 | Creo Medical Ltd | Electrosurgical probe for delivering microwave energy |
EP3808302B1 (en) | 2016-04-15 | 2023-07-26 | Neuwave Medical, Inc. | System for energy delivery |
TWI577413B (en) * | 2016-05-26 | 2017-04-11 | 和鑫生技開發股份有限公司 | Brachytherapy apparatus and radiation source thereof |
US20190246876A1 (en) | 2018-02-15 | 2019-08-15 | Neuwave Medical, Inc. | Compositions and methods for directing endoscopic devices |
US20190247117A1 (en) | 2018-02-15 | 2019-08-15 | Neuwave Medical, Inc. | Energy delivery devices and related systems and methods thereof |
CN108187234A (en) * | 2018-02-23 | 2018-06-22 | 董神武 | Portable microwave therapeutic apparatus for main and collateral channels and acupoints and control system and method |
US11672596B2 (en) | 2018-02-26 | 2023-06-13 | Neuwave Medical, Inc. | Energy delivery devices with flexible and adjustable tips |
GB2575484A (en) * | 2018-07-12 | 2020-01-15 | Creo Medical Ltd | Electrosurgical instrument |
GB2575485A (en) * | 2018-07-12 | 2020-01-15 | Creo Medical Ltd | Electrosurgical instrument |
EP3886959B1 (en) | 2018-11-27 | 2024-03-13 | Neuwave Medical, Inc. | Endoscopic system for energy delivery |
EP3893784A1 (en) | 2018-12-13 | 2021-10-20 | Neuwave Medical, Inc. | Energy delivery devices and related systems |
US11832879B2 (en) | 2019-03-08 | 2023-12-05 | Neuwave Medical, Inc. | Systems and methods for energy delivery |
GB2601789A (en) * | 2020-12-10 | 2022-06-15 | Creo Medical Ltd | Raman spectroscopy probe, Raman spectroscopy apparatus including the Raman spectroscopy probe and elongate assembly |
US11786303B2 (en) * | 2021-03-19 | 2023-10-17 | Quicker-Instrument Inc. | Microwave ablation probe |
US20230088132A1 (en) | 2021-09-22 | 2023-03-23 | NewWave Medical, Inc. | Systems and methods for real-time image-based device localization |
WO2023156965A1 (en) | 2022-02-18 | 2023-08-24 | Neuwave Medical, Inc. | Coupling devices and related systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6134476A (en) * | 1996-04-17 | 2000-10-17 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Transcatheter antenna for microwave treatment |
US6223086B1 (en) * | 1996-04-17 | 2001-04-24 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Endothelium preserving microwave treatment for atherosclerosis |
US6287302B1 (en) * | 1999-06-14 | 2001-09-11 | Fidus Medical Technology Corporation | End-firing microwave ablation instrument with horn reflection device |
Family Cites Families (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1112593B (en) | 1959-11-14 | 1961-08-10 | Philips Patentverwaltung | HF emitter for diathermy and therapy purposes |
US3461261A (en) | 1966-10-31 | 1969-08-12 | Du Pont | Heating apparatus |
US3871359A (en) | 1973-06-25 | 1975-03-18 | Interscience Technology Corp | Impedance measuring system |
SE441640B (en) | 1980-01-03 | 1985-10-21 | Stiftelsen Inst Mikrovags | PROCEDURE AND DEVICE FOR HEATING BY MICROVAGS ENERGY |
SE417780B (en) | 1980-01-22 | 1981-04-06 | Por Microtrans Ab | DIELECTRIC HEATING DEVICE |
US4446874A (en) | 1981-12-30 | 1984-05-08 | Clini-Therm Corporation | Microwave applicator with discoupled input coupling and frequency tuning functions |
GB8300779D0 (en) | 1983-01-12 | 1983-02-16 | Univ Glasgow | Microwave thermographic apparatus for bio-medical use |
CA1244889A (en) | 1983-01-24 | 1988-11-15 | Kureha Chemical Ind Co Ltd | Device for hyperthermia |
US4612940A (en) * | 1984-05-09 | 1986-09-23 | Scd Incorporated | Microwave dipole probe for in vivo localized hyperthermia |
US4891483A (en) | 1985-06-29 | 1990-01-02 | Tokyo Keiki Co. Ltd. | Heating apparatus for hyperthermia |
US4700716A (en) * | 1986-02-27 | 1987-10-20 | Kasevich Associates, Inc. | Collinear antenna array applicator |
US5564417A (en) | 1991-01-24 | 1996-10-15 | Non-Invasive Technology, Inc. | Pathlength corrected oximeter and the like |
US5150717A (en) * | 1988-11-10 | 1992-09-29 | Arye Rosen | Microwave aided balloon angioplasty with guide filament |
US4945912A (en) | 1988-11-25 | 1990-08-07 | Sensor Electronics, Inc. | Catheter with radiofrequency heating applicator |
US5540737A (en) | 1991-06-26 | 1996-07-30 | Massachusetts Institute Of Technology | Minimally invasive monopole phased array hyperthermia applicators and method for treating breast carcinomas |
US5697882A (en) | 1992-01-07 | 1997-12-16 | Arthrocare Corporation | System and method for electrosurgical cutting and ablation |
US6142992A (en) | 1993-05-10 | 2000-11-07 | Arthrocare Corporation | Power supply for limiting power in electrosurgery |
US5227730A (en) | 1992-09-14 | 1993-07-13 | Kdc Technology Corp. | Microwave needle dielectric sensors |
US5620479A (en) | 1992-11-13 | 1997-04-15 | The Regents Of The University Of California | Method and apparatus for thermal therapy of tumors |
US5364392A (en) | 1993-05-14 | 1994-11-15 | Fidus Medical Technology Corporation | Microwave ablation catheter system with impedance matching tuner and method |
US5728143A (en) | 1995-08-15 | 1998-03-17 | Rita Medical Systems, Inc. | Multiple antenna ablation apparatus and method |
US5536267A (en) | 1993-11-08 | 1996-07-16 | Zomed International | Multiple electrode ablation apparatus |
US5458597A (en) | 1993-11-08 | 1995-10-17 | Zomed International | Device for treating cancer and non-malignant tumors and methods |
US5683384A (en) | 1993-11-08 | 1997-11-04 | Zomed | Multiple antenna ablation apparatus |
US6056744A (en) | 1994-06-24 | 2000-05-02 | Conway Stuart Medical, Inc. | Sphincter treatment apparatus |
US5810742A (en) | 1994-10-24 | 1998-09-22 | Transcan Research & Development Co., Ltd. | Tissue characterization based on impedance images and on impedance measurements |
US5630426A (en) | 1995-03-03 | 1997-05-20 | Neovision Corporation | Apparatus and method for characterization and treatment of tumors |
US6106524A (en) | 1995-03-03 | 2000-08-22 | Neothermia Corporation | Methods and apparatus for therapeutic cauterization of predetermined volumes of biological tissue |
US5735847A (en) | 1995-08-15 | 1998-04-07 | Zomed International, Inc. | Multiple antenna ablation apparatus and method with cooling element |
US5800484A (en) | 1995-08-15 | 1998-09-01 | Rita Medical Systems, Inc. | Multiple antenna ablation apparatus with expanded electrodes |
US5807272A (en) | 1995-10-31 | 1998-09-15 | Worcester Polytechnic Institute | Impedance spectroscopy system for ischemia monitoring and detection |
US6016452A (en) | 1996-03-19 | 2000-01-18 | Kasevich; Raymond S. | Dynamic heating method and radio frequency thermal treatment |
US6289249B1 (en) * | 1996-04-17 | 2001-09-11 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Transcatheter microwave antenna |
US6620155B2 (en) | 1996-07-16 | 2003-09-16 | Arthrocare Corp. | System and methods for electrosurgical tissue contraction within the spine |
JP4033495B2 (en) | 1996-08-15 | 2008-01-16 | デカ・プロダクツ・リミテッド・パートナーシップ | Medical irrigation pump and system |
US5873849A (en) | 1997-04-24 | 1999-02-23 | Ichor Medical Systems, Inc. | Electrodes and electrode arrays for generating electroporation inducing electrical fields |
US6104959A (en) | 1997-07-31 | 2000-08-15 | Microwave Medical Corp. | Method and apparatus for treating subcutaneous histological features |
US6009347A (en) | 1998-01-27 | 1999-12-28 | Genetronics, Inc. | Electroporation apparatus with connective electrode template |
US6027502A (en) | 1998-01-29 | 2000-02-22 | Desai; Ashvin H. | Surgical apparatus providing tool access and replaceable irrigation pump cartridge |
US7776014B2 (en) | 1998-01-29 | 2010-08-17 | Peter Visconti | Disposable surgical suction/irrigation trumpet valve tube cassette |
US6059778A (en) | 1998-05-05 | 2000-05-09 | Cardiac Pacemakers, Inc. | RF ablation apparatus and method using unipolar and bipolar techniques |
US6050994A (en) | 1998-05-05 | 2000-04-18 | Cardiac Pacemakers, Inc. | RF ablation apparatus and method using controllable duty cycle with alternate phasing |
US6558378B2 (en) | 1998-05-05 | 2003-05-06 | Cardiac Pacemakers, Inc. | RF ablation system and method having automatic temperature control |
US6171305B1 (en) | 1998-05-05 | 2001-01-09 | Cardiac Pacemakers, Inc. | RF ablation apparatus and method having high output impedance drivers |
US6312425B1 (en) | 1998-05-05 | 2001-11-06 | Cardiac Pacemakers, Inc. | RF ablation catheter tip electrode with multiple thermal sensors |
US6635055B1 (en) | 1998-05-06 | 2003-10-21 | Microsulis Plc | Microwave applicator for endometrial ablation |
JP2000005180A (en) | 1998-06-25 | 2000-01-11 | Olympus Optical Co Ltd | Acoustic impedance measuring device |
DE59915265D1 (en) * | 1998-12-18 | 2011-06-16 | Celon Ag Medical Instruments | Electrode assembly for a surgical instrument for electrothermal coagulation in tissue |
GB9904373D0 (en) * | 1999-02-25 | 1999-04-21 | Microsulis Plc | Radiation applicator |
US6478793B1 (en) | 1999-06-11 | 2002-11-12 | Sherwood Services Ag | Ablation treatment of bone metastases |
US6770070B1 (en) | 2000-03-17 | 2004-08-03 | Rita Medical Systems, Inc. | Lung treatment apparatus and method |
AU2001249752A1 (en) | 2000-03-31 | 2001-10-15 | Rita Medical Systems, Inc. | Tissue biopsy and treatment apparatus and method |
AU2001279026B2 (en) | 2000-07-25 | 2005-12-22 | Angiodynamics, Inc. | Apparatus for detecting and treating tumors using localized impedance measurement |
JP2002109971A (en) | 2000-09-27 | 2002-04-12 | Mitsubishi Cable Ind Ltd | Highly foamed plastic insulation coaxial cable |
US7008421B2 (en) | 2002-08-21 | 2006-03-07 | Resect Medical, Inc. | Apparatus and method for tissue resection |
US6497704B2 (en) | 2001-04-04 | 2002-12-24 | Moshe Ein-Gal | Electrosurgical apparatus |
US7070597B2 (en) * | 2001-10-18 | 2006-07-04 | Surgrx, Inc. | Electrosurgical working end for controlled energy delivery |
US6878147B2 (en) * | 2001-11-02 | 2005-04-12 | Vivant Medical, Inc. | High-strength microwave antenna assemblies |
US7128739B2 (en) * | 2001-11-02 | 2006-10-31 | Vivant Medical, Inc. | High-strength microwave antenna assemblies and methods of use |
US6706040B2 (en) * | 2001-11-23 | 2004-03-16 | Medlennium Technologies, Inc. | Invasive therapeutic probe |
US6752767B2 (en) | 2002-04-16 | 2004-06-22 | Vivant Medical, Inc. | Localization element with energized tip |
GB2387544B (en) | 2002-10-10 | 2004-03-17 | Microsulis Plc | Microwave applicator |
ES2309878T3 (en) * | 2002-11-27 | 2008-12-16 | Medical Device Innovations Limited | DEVICE AND PROCEDURE FOR FABRIC ALBLATION WITH MICROWAVE RADIATION. |
US20040267340A1 (en) | 2002-12-12 | 2004-12-30 | Wit Ip Corporation | Modular thermal treatment systems with single-use disposable catheter assemblies and related methods |
GB2403148C2 (en) | 2003-06-23 | 2013-02-13 | Microsulis Ltd | Radiation applicator |
JP4231743B2 (en) | 2003-07-07 | 2009-03-04 | オリンパス株式会社 | Biological tissue resection device |
US7311703B2 (en) | 2003-07-18 | 2007-12-25 | Vivant Medical, Inc. | Devices and methods for cooling microwave antennas |
GB2406521B (en) | 2003-10-03 | 2007-05-09 | Microsulis Ltd | Treatment of hollow anatomical structures |
US6958064B2 (en) | 2003-11-14 | 2005-10-25 | Boston Scientific Scimed, Inc. | Systems and methods for performing simultaneous ablation |
EP1684655A2 (en) | 2003-11-18 | 2006-08-02 | SciMed Life Systems, Inc. | System and method for tissue ablation |
GB2415630C2 (en) | 2004-07-02 | 2007-03-22 | Microsulis Ltd | Radiation applicator and method of radiating tissue |
US7776035B2 (en) | 2004-10-08 | 2010-08-17 | Covidien Ag | Cool-tip combined electrode introducer |
US7553309B2 (en) | 2004-10-08 | 2009-06-30 | Covidien Ag | Electrosurgical system employing multiple electrodes and method thereof |
US7282049B2 (en) | 2004-10-08 | 2007-10-16 | Sherwood Services Ag | Electrosurgical system employing multiple electrodes and method thereof |
US9247952B2 (en) | 2004-10-15 | 2016-02-02 | Amendia, Inc. | Devices and methods for tissue access |
US8192435B2 (en) | 2004-10-15 | 2012-06-05 | Baxano, Inc. | Devices and methods for tissue modification |
US8221397B2 (en) | 2004-10-15 | 2012-07-17 | Baxano, Inc. | Devices and methods for tissue modification |
US8048080B2 (en) | 2004-10-15 | 2011-11-01 | Baxano, Inc. | Flexible tissue rasp |
US9101386B2 (en) | 2004-10-15 | 2015-08-11 | Amendia, Inc. | Devices and methods for treating tissue |
US8613745B2 (en) | 2004-10-15 | 2013-12-24 | Baxano Surgical, Inc. | Methods, systems and devices for carpal tunnel release |
GB0502384D0 (en) | 2005-02-04 | 2005-03-16 | Instrumedical Ltd | Electro-surgical needle apparatus |
EP2305188B1 (en) | 2005-04-27 | 2015-06-03 | ZOLL Circulation, Inc. | Apparatus for providing enhanced heat transfer from a body |
GB2434314B (en) | 2006-01-03 | 2011-06-15 | Microsulis Ltd | Microwave applicator with dipole antenna |
US8512330B2 (en) | 2005-07-01 | 2013-08-20 | Halt Medical Inc. | Ablation method |
US20070066971A1 (en) | 2005-09-21 | 2007-03-22 | Podhajsky Ronald J | Method and system for treating pain during an electrosurgical procedure |
US7879031B2 (en) | 2005-09-27 | 2011-02-01 | Covidien Ag | Cooled RF ablation needle |
US20070078453A1 (en) | 2005-10-04 | 2007-04-05 | Johnson Kristin D | System and method for performing cardiac ablation |
US8366712B2 (en) | 2005-10-15 | 2013-02-05 | Baxano, Inc. | Multiple pathways for spinal nerve root decompression from a single access point |
US8062298B2 (en) | 2005-10-15 | 2011-11-22 | Baxano, Inc. | Flexible tissue removal devices and methods |
WO2007084508A2 (en) | 2006-01-13 | 2007-07-26 | Mirabilis Medica, Inc. | Apparatus for delivering high intensity focused ultrasound energy to a treatment site internal to a patient's body |
US20070197895A1 (en) | 2006-02-17 | 2007-08-23 | Sdgi Holdings, Inc. | Surgical instrument to assess tissue characteristics |
CA2649119A1 (en) | 2006-04-13 | 2007-12-13 | Mirabilis Medica, Inc. | Methods and apparatus for the treatment of menometrorrhagia, endometrial pathology, and cervical neoplasia using high intensity focused ultrasound energy |
KR100785882B1 (en) | 2006-04-14 | 2007-12-17 | 경희대학교 산학협력단 | Apparatus and method for detecting anomalies within a body |
US20070260240A1 (en) | 2006-05-05 | 2007-11-08 | Sherwood Services Ag | Soft tissue RF transection and resection device |
US20090209955A1 (en) | 2006-06-20 | 2009-08-20 | Forster David C | Prosthetic valve implant site preparation techniques |
US7763018B2 (en) | 2006-07-28 | 2010-07-27 | Covidien Ag | Cool-tip thermocouple including two-piece hub |
EP2405823A4 (en) | 2009-03-13 | 2012-07-04 | Baxano Inc | Flexible neural localization devices and methods |
-
2003
- 2003-06-23 GB GB0314631A patent/GB2403148C2/en not_active Expired - Fee Related
-
2004
- 2004-06-18 AU AU2004248967A patent/AU2004248967B2/en not_active Ceased
- 2004-06-18 GB GB0718459A patent/GB2440847B/en not_active Expired - Fee Related
- 2004-06-18 AT AT04742975T patent/ATE464013T1/en not_active IP Right Cessation
- 2004-06-18 US US10/561,701 patent/US20070043346A1/en not_active Abandoned
- 2004-06-18 JP JP2006516442A patent/JP4559418B2/en not_active Expired - Fee Related
- 2004-06-18 MX MXPA05014207A patent/MXPA05014207A/en active IP Right Grant
- 2004-06-18 GB GB0600489A patent/GB2418619B/en not_active Expired - Fee Related
- 2004-06-18 CN CNB2004800195767A patent/CN100558311C/en not_active Expired - Fee Related
- 2004-06-18 DE DE602004026588T patent/DE602004026588D1/en active Active
- 2004-06-18 CA CA002530154A patent/CA2530154A1/en not_active Abandoned
- 2004-06-18 WO PCT/GB2004/002620 patent/WO2004112628A1/en active Application Filing
- 2004-06-18 EP EP04742975A patent/EP1646324B1/en not_active Not-in-force
- 2004-06-18 ZA ZA200600591A patent/ZA200600591B/en unknown
- 2004-06-22 MY MYPI20042421A patent/MY136363A/en unknown
- 2004-06-23 TW TW093118125A patent/TWI278301B/en not_active IP Right Cessation
-
2012
- 2012-11-21 US US13/683,047 patent/US9161811B2/en active Active
-
2015
- 2015-09-18 US US14/857,915 patent/US9770295B2/en active Active
-
2017
- 2017-08-23 US US15/684,315 patent/US10772682B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6134476A (en) * | 1996-04-17 | 2000-10-17 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Transcatheter antenna for microwave treatment |
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