CA2608152A1 - Apparatus for tissue cauterization - Google Patents
Apparatus for tissue cauterization Download PDFInfo
- Publication number
- CA2608152A1 CA2608152A1 CA002608152A CA2608152A CA2608152A1 CA 2608152 A1 CA2608152 A1 CA 2608152A1 CA 002608152 A CA002608152 A CA 002608152A CA 2608152 A CA2608152 A CA 2608152A CA 2608152 A1 CA2608152 A1 CA 2608152A1
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- Prior art keywords
- tissue
- electrodes
- power
- power supply
- cauterization
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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
- A61B18/04—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
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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
- A61B18/04—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
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
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- 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
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- 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
- A61B17/3205—Excision instruments
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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
- A61B18/04—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
- A61B18/1206—Generators therefor
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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
- A61B18/04—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
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- 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
- A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
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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
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00505—Urinary tract
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00595—Cauterization
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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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/0063—Sealing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
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- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
- A61B2018/00648—Sensing and controlling the application of energy with feedback, i.e. closed loop control using more than one sensed parameter
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- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00666—Sensing and controlling the application of energy using a threshold value
- A61B2018/00678—Sensing and controlling the application of energy using a threshold value upper
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- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
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- A—HUMAN NECESSITIES
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- A61B2018/00773—Sensed parameters
- A61B2018/00779—Power or energy
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00827—Current
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00875—Resistance or impedance
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00886—Duration
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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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00892—Voltage
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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
- A61B18/04—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
- A61B18/1206—Generators therefor
- A61B2018/124—Generators therefor switching the output to different electrodes, e.g. sequentially
Abstract
The invention is concerned with cauterizing and resecting tissue. A pair of electrodes are placed on opposed tissue surfaces, and radio frequency power is applied through the electrodes to cauterizing a tissue mass therebetween.
After cauterization has been effected, the tissue may be resected along a plane within the cauterized region with minimum or no bleeding. The tissue mass may then be removed.
After cauterization has been effected, the tissue may be resected along a plane within the cauterized region with minimum or no bleeding. The tissue mass may then be removed.
Claims (25)
1. An apparatus for cauterizing tissue, comprising:
a plurality electrodes for engagement with treatment surfaces of a tissue mass;
a power supply connectable to said electrodes for selectively applying high frequency power thereto to cauterize tissue between said treatment surfaces; and means for monitoring said high frequency power proximate to said electrodes and/or proximate to said tissue; and for modulating said high frequency power based upon any two of current, voltage, impedance, energy, power, time, and temperature.
a plurality electrodes for engagement with treatment surfaces of a tissue mass;
a power supply connectable to said electrodes for selectively applying high frequency power thereto to cauterize tissue between said treatment surfaces; and means for monitoring said high frequency power proximate to said electrodes and/or proximate to said tissue; and for modulating said high frequency power based upon any two of current, voltage, impedance, energy, power, time, and temperature.
2. An apparatus as in Claim 1, wherein at least one of said electrodes comprises a conformable, electrically conductive surface.
3. An apparatus as in Claim 1, wherein at least one of said electrodes comprises a rigid electrically conductive surface.
4. An apparatus for tissue cauterization, comprising:
a plurality of electrodes for engagement against one or more surfaces of said tissue;
a power supply having a plurality of channels that are selectively connectable to said electrodes for selectively applying radio frequency energy thereto, said power supply providing multiple, selectable adjustable settings that based on a tissue to be cauterized;
an automatic feedback system for modulating said power supply in real time based upon any of current, voltage, impedance, energy, power, time, and temperature, as monitored during cauterization; and means for supplying radio frequency energy to said electrodes from said power supply to apply said energy to said tissue through said electrodes to selectively energize different ones of said electrodes, and independently applying said power via at least two of said electrodes to said tissue for a time and in an amount sufficient to cauterize tissue contacted by said electrodes;
wherein each electrode is treated independently in terms of energy transmission and RF cycle monitoring, modulation, and termination; and wherein each electrode may have a difference power curve that is modulated in real time.
a plurality of electrodes for engagement against one or more surfaces of said tissue;
a power supply having a plurality of channels that are selectively connectable to said electrodes for selectively applying radio frequency energy thereto, said power supply providing multiple, selectable adjustable settings that based on a tissue to be cauterized;
an automatic feedback system for modulating said power supply in real time based upon any of current, voltage, impedance, energy, power, time, and temperature, as monitored during cauterization; and means for supplying radio frequency energy to said electrodes from said power supply to apply said energy to said tissue through said electrodes to selectively energize different ones of said electrodes, and independently applying said power via at least two of said electrodes to said tissue for a time and in an amount sufficient to cauterize tissue contacted by said electrodes;
wherein each electrode is treated independently in terms of energy transmission and RF cycle monitoring, modulation, and termination; and wherein each electrode may have a difference power curve that is modulated in real time.
5. The apparatus of Claim 4, said automatic feedback system further comprising:
means for monitoring parameters comprising any of current, voltage, impedance, energy, power, time, and temperature, and any combination thereof.
means for monitoring parameters comprising any of current, voltage, impedance, energy, power, time, and temperature, and any combination thereof.
6. The apparatus of Claim 5, further comprising:
a mathematical model that combines said monitored parameters into an algorithm that determines the quality of tissue sealing based on prior empirical analysis;
wherein power supply output is modulated to optimize tissue sealing by terminating a cauterization cycle when conditions have been met that have been empirically determined to safely and repeatedly satisfy conditions of a procedure being performed.
a mathematical model that combines said monitored parameters into an algorithm that determines the quality of tissue sealing based on prior empirical analysis;
wherein power supply output is modulated to optimize tissue sealing by terminating a cauterization cycle when conditions have been met that have been empirically determined to safely and repeatedly satisfy conditions of a procedure being performed.
7. The apparatus of Claim 6, wherein said conditions comprise any of impedance and/or temperature and/or pressure value; and wherein said modulation comprises continuing a power level for a predetermined amount of time beyond a predetermined point, or reducing (or conversely increasing) said power level once a certain impedance and pressure or temperature threshold have been reached.
8. The apparatus of Claim 6, said algorithm comprising any of multiple modulations, step functions, or continuous changes in power, voltage, and/or energy to optimize a tissue sealing cycle;
wherein each electrode may have different cycle times and power, current, voltage, and energy profiles as a result of feedback data for a specific segment of tissue contacting a specific electrode.
wherein each electrode may have different cycle times and power, current, voltage, and energy profiles as a result of feedback data for a specific segment of tissue contacting a specific electrode.
9. The apparatus of Claim 4, said power supply further comprising:
a constant output power circuit.
a constant output power circuit.
10. The apparatus of Claim 4, said power supply further comprising:
means for setting a desired power in accordance with a profile.
means for setting a desired power in accordance with a profile.
11. The apparatus of Claim 4, wherein said power supply a plurality of output channels, each of which is independently adjustable to provide a source of power for each of multiple electrodes
12. The apparatus of Claim 4, said automatic feedback system further comprising:
one or more sensors.
one or more sensors.
13. The apparatus of Claim 4, wherein said power supply is configured by one or more profiles to operate with a power curve and power distribution amongst said electrodes in accordance with a desired cauterization procedure.
14. The apparatus of Claim 4, further comprising:
a smart card reader for reading a smart card for use in configuring said power supply for a particular cauterization procedure, and for recording information indicative of operation of the power supply during said cauterization procedure.
a smart card reader for reading a smart card for use in configuring said power supply for a particular cauterization procedure, and for recording information indicative of operation of the power supply during said cauterization procedure.
15. The apparatus of Claim 4, said power supply further comprising:
means for capturing a real time profile of the tissue to be cauterized and for using said real time profile to adapt a pre-established profile for a particular cauterization procedure;
wherein a profile which is previously established for a particular cauterization procedure is modified in accordance with a real time profile of the tissue to be cauterized.
means for capturing a real time profile of the tissue to be cauterized and for using said real time profile to adapt a pre-established profile for a particular cauterization procedure;
wherein a profile which is previously established for a particular cauterization procedure is modified in accordance with a real time profile of the tissue to be cauterized.
16. The apparatus of Claim 4, said power supply further comprising:
means for setting a threshold which determines when an endpoint is approached;
wherein said threshold is determined by measurements which may comprise any of impedance, current, voltage, energy, power, temperature, a time element, and combinations thereof.
means for setting a threshold which determines when an endpoint is approached;
wherein said threshold is determined by measurements which may comprise any of impedance, current, voltage, energy, power, temperature, a time element, and combinations thereof.
17. The apparatus of Claim 4, said automatic feedback system further comprising:
means for monitoring two or more parameters during cauterization and for determining when a threshold is reached.
means for monitoring two or more parameters during cauterization and for determining when a threshold is reached.
18. The apparatus of Claim 17, wherein once said threshold is reached, an endpoint procedure is implemented.
19. The apparatus of Claim 4, said automatic feedback system further comprising:
means for measuring impedance between selected electrode pairs or groups of electrodes.
means for measuring impedance between selected electrode pairs or groups of electrodes.
20. The apparatus of Claim 4, said automatic feedback system further comprising:
means for measuring temperature in connection with one or more physical transitions along a surface of an appliance associated with one or more of said electrodes;.
means for measuring temperature in connection with one or more physical transitions along a surface of an appliance associated with one or more of said electrodes;.
21. The apparatus of Claim 4, said automatic feedback system further comprising:
means for measuring the effect of cauterization with local strain gauges situated along a length of at least one probe jaw associated with one or more of said electrodes.
means for measuring the effect of cauterization with local strain gauges situated along a length of at least one probe jaw associated with one or more of said electrodes.
22. The apparatus of Claim 21, wherein said strain gauges precompute a cauterization profile.
23. The apparatus of Claim 4, said power supply further comprising:
means for sensing at the beginning of a cycle whether tissue is present at each electrode or not using impedance, pressure, or any combination of these and/or other parameters; wherein any electrode pair has no tissue present it becomes idle and said power supply indicates which electrode(s) are idle.
means for sensing at the beginning of a cycle whether tissue is present at each electrode or not using impedance, pressure, or any combination of these and/or other parameters; wherein any electrode pair has no tissue present it becomes idle and said power supply indicates which electrode(s) are idle.
24. The apparatus of Claim 23, said power supply further comprising:
an indicator for each electrode pair that provides status of a cauterization cycle that is indicative of whether said cycle is active or completed.
an indicator for each electrode pair that provides status of a cauterization cycle that is indicative of whether said cycle is active or completed.
25. The apparatus of Claim 24, wherein a three mode status "light" or other visible status indicator is provided for each electrode once said cycle is initiated to indicate any of said cycle being idle, active, and completed.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68093705P | 2005-05-12 | 2005-05-12 | |
US60/680,937 | 2005-05-12 | ||
US72572005P | 2005-10-11 | 2005-10-11 | |
US60/725,720 | 2005-10-11 | ||
US11/382,652 US7942874B2 (en) | 2005-05-12 | 2006-05-10 | Apparatus for tissue cauterization |
US11/382,652 | 2006-05-10 | ||
PCT/US2006/018440 WO2006124595A1 (en) | 2005-05-12 | 2006-05-12 | Apparatus for tissue cauterization |
Publications (2)
Publication Number | Publication Date |
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CA2608152A1 true CA2608152A1 (en) | 2006-11-23 |
CA2608152C CA2608152C (en) | 2012-11-13 |
Family
ID=37431911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2608152A Expired - Fee Related CA2608152C (en) | 2005-05-12 | 2006-05-12 | Apparatus for tissue cauterization |
Country Status (14)
Country | Link |
---|---|
US (3) | US7862565B2 (en) |
EP (1) | EP1895921B1 (en) |
JP (1) | JP4774101B2 (en) |
KR (1) | KR101007106B1 (en) |
CN (1) | CN101188978B (en) |
AT (1) | ATE446719T1 (en) |
AU (1) | AU2006247615B2 (en) |
CA (1) | CA2608152C (en) |
DE (1) | DE602006010066D1 (en) |
DK (1) | DK1895921T3 (en) |
ES (1) | ES2333164T3 (en) |
MX (1) | MX2007014166A (en) |
PL (1) | PL1895921T3 (en) |
WO (2) | WO2006124595A1 (en) |
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- 2006-05-10 US US11/382,652 patent/US7942874B2/en active Active
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JP4774101B2 (en) | 2011-09-14 |
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WO2006124595A1 (en) | 2006-11-23 |
CN101188978A (en) | 2008-05-28 |
US8888770B2 (en) | 2014-11-18 |
EP1895921A1 (en) | 2008-03-12 |
US20060259034A1 (en) | 2006-11-16 |
EP1895921A4 (en) | 2008-08-06 |
CA2608152C (en) | 2012-11-13 |
JP2008539981A (en) | 2008-11-20 |
WO2006124601A2 (en) | 2006-11-23 |
US7942874B2 (en) | 2011-05-17 |
KR101007106B1 (en) | 2011-01-10 |
ES2333164T3 (en) | 2010-02-17 |
US20060271041A1 (en) | 2006-11-30 |
CN101188978B (en) | 2010-09-01 |
EP1895921B1 (en) | 2009-10-28 |
WO2006124601A3 (en) | 2007-11-15 |
KR20080015000A (en) | 2008-02-15 |
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