Electrosurgical system and method having enhanced arc prevention
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-018/14
A61B-018/12
A61B-018/04
A61B-018/00
출원번호
US-0339583
(2014-07-24)
등록번호
US-9649148
(2017-05-16)
발명자
/ 주소
Woloszko, Jean
Gaspredes, Jonathan L.
Armstrong, Scott A.
출원인 / 주소
ArthroCare Corporation
대리인 / 주소
Warmbold, David A.
인용정보
피인용 횟수 :
0인용 특허 :
213
초록▼
Electrosurgical systems and methods are described herein, the system including an electrosurgical probe with an active electrode disposed near the probe distal end, a system with a power supply for delivery of voltage to the active electrode and a controller that receives and processes a signal from
Electrosurgical systems and methods are described herein, the system including an electrosurgical probe with an active electrode disposed near the probe distal end, a system with a power supply for delivery of voltage to the active electrode and a controller that receives and processes a signal from a current sensor and a temperature sensor. The current sensor measures the current output of the power supply and the temperature sensor is adjacent an electrically conductive fluid located at a target site. The controller may be programmed to operate in a low voltage mode that limits the power supply to a low voltage output so as to determine whether the current output from the current sensor is within a current output range. This range is defined by predetermined upper and lower limits that are modified by at least one measured value.
대표청구항▼
1. An electrosurgical system for treating tissue comprising: an electrosurgical probe comprising a shaft having a distal end and a proximal end, an active electrode disposed near the distal end;a high frequency power supply for delivery of high frequency voltage to said active electrode, the high fr
1. An electrosurgical system for treating tissue comprising: an electrosurgical probe comprising a shaft having a distal end and a proximal end, an active electrode disposed near the distal end;a high frequency power supply for delivery of high frequency voltage to said active electrode, the high frequency power supply coupled to the active electrode and a return electrode;a controller electrically connected to receive and process a signal from a current sensor, the current sensor operable to measure a current output associated with the power supply when a low voltage output is delivered to the active electrode or the return electrode; andwherein the controller is programmed to prevent delivery of a therapeutic voltage output, until the current signal received is within a range, said range having adjustable limits and wherein the controller is further programmed to adjust said limits based on at least one measured value, the measured value indicative of active electrode wear or electrical conductivity of an electrically conductive fluid adjacent the active electrode. 2. The system of claim 1, wherein the controller is electrically connected to receive and process a signal from a temperature sensor, wherein the temperature sensor is disposed in the electrically conductive fluid. 3. The system of claim 2, wherein the at least one measured value comprises temperature. 4. The system of claim 3 wherein the range defines an upper current limit that is adjusted so as to increase as the temperature increases. 5. The system of claim 2, wherein the at least one measured value comprises temperature measured from the temperature sensor; the measured temperature indicative of the electrically conductivity of the electrically conductive fluid. 6. The system of claim 1, wherein the controller is operable to automatically adjust the power supply to the therapeutic voltage output if the current output is within the range. 7. The system of claim 6, wherein the controller is operable to automatically interrupt the power supply from delivering the therapeutic voltage output if the current output is outside the range. 8. The system of claim 7 wherein the controller is operable to deliver the low voltage output for at least one suspension period, and then return to the therapeutic voltage output if the current output is within the range. 9. The system of claim 8 wherein the suspension period is at least 5 ms. 10. The system of claim 1 wherein the range has a lower limit operable to detect high electrode circuit impedance faults in the probe or insufficient electrically conductive fluid adjacent the active and return electrode. 11. The system of claim 1 wherein the at least one measured value comprises a total length of time the probe has been delivering therapeutic energy. 12. The system of claim 1 wherein the controller is configured to identify a device type of said electrosurgical probe when operationally connected to the high frequency power supply and to automatically determine the range specific to the device type. 13. An electrosurgical method for minimizing arcing between an electrosurgical probe and a metallic object comprising: delivering a low voltage from a power source to an active electrode or a return electrode of the electrosurgical probe;sensing a current output of the power source adjacent to the active electrode or the return electrode of the electrosurgical probe;modifying a predetermined high current limit based on at least one measured value indicative of conductivity of an electrically conductive fluid present adjacent the active or return electrode;comparing the sensed current output to the modified high current predetermined limit; andpreventing the delivery of a therapeutic voltage output until the sensed current output is less than the modified predetermined high current limit. 14. The method of claim 13 further comprising the step of automatically delivering the therapeutic energy if the sensed current output is below the modified predetermined limit. 15. The method of claim 14 wherein said delivering the therapeutic energy forms a plasma in the vicinity of the active electrode. 16. The method of claim 14 further comprising automatically repeating the steps of delivering, sensing, modifying and comparing, should an arc be detected between the active electrode and a metallic object while delivering the therapeutic energy. 17. The method of claim 13 comprising repeating the step of delivering low voltage energy for at least one suspension period, and then returning to delivering the therapeutic energy if the sensed current output is below the modified predetermined limit. 18. The method of claim 13 wherein the steps of delivering, sensing, modifying and comparing lasts at least 5 ms. 19. The method of claim 13 wherein the active electrode is positioned in electrically conductive fluid during the procedure and wherein a current flow path from the active electrode, through the electrically conductive fluid, to the return electrode is created when the voltage is delivered. 20. The method of claim 13, further comprising sensing a fluid temperature adjacent the distal end of the electrosurgical probe. 21. The method of claim 20, wherein the at least one measured value comprises the fluid temperature. 22. The method of claim 21 wherein increases in the fluid temperature modifies the predetermined high current limit so as to increase said limit. 23. The method of claim 13 further comprising comparing the measured current output to a low current predetermined limit, operable to detect high impedance faults and wherein the steps of delivering, sensing and comparing are repeated if the measured current output is below the low current predetermined limit. 24. The method of claim 13 wherein the low voltage is sufficiently low so as to not affect any adjacent tissue. 25. An electrosurgical system for treating tissue at a target site comprising: an electrosurgical probe comprising a shaft having a distal end and a proximal end, an active electrode disposed near the distal end;a power supply for delivery of a voltage to said active electrode, the power supply coupled to the active electrode and a return electrode;a controller operable to receive a signal from a current sensor and a temperature sensor, the current sensor operable to measure the current output of the power supply and the temperature sensor configured to send a signal indicative of a temperature of electrically conductive fluid adjacent the active electrode; andwherein the controller is programmed to automatically suspend delivery of a therapeutic level of energy to the active electrode for at least one suspension period, and wherein the controller is operable to deliver a low voltage output during the at least one suspension period while measuring the current output and the receiving a signal indicative of temperature, and wherein the controller is operable to automatically deliver the therapeutic level of energy once the suspension period is complete and once the current output drops below an upper limit, wherein the upper limit is an adjustable limit, adjusted based on the temperature signal. 26. An electrosurgical system comprising: a processor;a memory coupled to the processor;a voltage generator communicatively coupled to the processor;a temperature sensor communicatively coupled to the processor;wherein the memory stores a program that, when executed by the processor, causes the processor to: receive a value indicative of a current output associated with the voltage generator during periods of time when a low voltage output is being delivered to an active electrode of an electrosurgical probe;determine at least one output current range limit, indicative of the presence of a metallic object within a distance from the active electrode of the electrosurgical wand by: monitoring at least one measured value indicative of at least one condition selected from the group consisting of: wear of the active electrode, and a temperature associated with an fluid in the vicinity of the active electrode,modifying the at least one current output range limit based on the measured value; andprevent delivery of a therapeutic voltage output until the current output is within modified current range. 27. The system of claim 26 wherein when the processor determines, the program causes the processor to adjust an upper limit of the range based on the temperature associated with the fluid in the vicinity of the active electrode. 28. The system of claim 26 wherein when the processor determines, the program causes the processor to adjust an upper limit of the range based on the active electrode condition of the electrosurgical wand.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (213)
Edwards Stuart D., Ablation apparatus and system for removal of soft palate tissue.
Cohen Donald (Irvine CA) Daw Derek J. (Costa Mesa CA) Kick George F. (Medina OH) Acosta George M. (Long Beach CA), Apparatus and method for venous ligation.
Phan, Huy D.; Swanson, David K.; Koblish, Josef V.; Thompson, Russell B.; Jenkins, Thomas R., Apparatus for mapping and coagulating soft tissue in or around body orifices.
Phan,Huy D.; Swanson,David K.; Koblish,Josef V.; Thompson,Russell B.; Jenkins,Thomas R., Apparatus for mapping and coagulating soft tissue in or around body orifices.
Malis Jerry L. (King of Prussia PA) Malis Leonard I. (Queens NY) Acorcey Robert R. (Cherry Hill NJ) Klaus Harry E. (Bryn Mawr PA) Solt David L. (Fort Washington ; both ofn PA) DiJoseph Frank (Atco NJ, Bipolar RF generator.
Fleenor Richard P. (Englewood CO) Bromley Robert L. (Louisville CO), Bipolar electrosurgical instrument for use in minimally invasive internal surgical procedures.
Lennox Charles D. (75 Ledgewood Hills Dr. Nashua NH 03062) Noddin Richard A. (1390 Washington St. Holliston MA 01746) Sahatjian Ronald (29 Saddle Club Rd. Lexington MA 02173), Device and method for heating tissue in a patient\s body.
Billings R. Gail (Hollday UT) Cutler Christopher A. (Centerville UT) Bush David A. (Bountiful UT), Diathermy coagulation and ablation apparatus and method.
Abele John E. (Concord MA) Rowe Steven (Belmont MA) Rowland Christopher A. (Marlboro MA) Vergano Michael G. (Cumberland RI), Electro-coagulation and ablation and other electrotherapeutic treatments of body tissue.
Woloszko, Jean; Davison, Terry S.; Hovda, David C.; Thapliyal, Hira V.; Eggers, Philip E., Electrosurgical apparatus having digestion electrode and methods related thereto.
Bales Thomas O. (Miami FL) Charles Kirk W. (Austell GA) Gillespie Lionel (Atlanta GA) Kopp Joe (Decatur GA) Turkel David (Miami FL), Endoscopic suction instrument having variable suction strength capabilities.
Klinger John F. (Danbury CT) Matula Paul A. (Brookfield CT) Tovey H. Jonathan (Milford CT) Aranyi Ernie (Easton CT), Endoscopic surgical instrument for aspiration and irrigation.
Negus Charles Christopher ; Linhares Stephen J. ; Rudko Robert I. ; Woodruff Eileen A., Gauging system for monitoring channel depth in percutaneous endocardial revascularization.
Ellman Alan G. (1135 Railroad Ave. Hewlett NY 11557) Garito Jon C. (1135 Railroad Ave. Hewlett NY 11557), Graft harvesting hair transplants with electrosurgery.
Tan Oon T. (1 Marlborough St. Boston MA 02116), Laser treatment method for removing pigmentations, lesions, and abnormalities from the skin of a living human.
Lax Ronald G. (Grass Valley CA) Fanton Gary S. (Portola Valley CA) Edwards Stuart D. (Los Altos CA), Method and apparatus for controlled contraction of soft tissue.
Geddes Leslie A. (400 N. River Rd. West Lafayette IN 47907) Bourland Joe D. (606 Wilshire West Lafayette IN 47907) Voorhees ; III William D. (5010 Swisher Rd. West Lafayette IN 47907) Fearnot Neal E., Method and apparatus for electrically compensated measurement of cardiac output.
Walinsky Paul (Philadelphia PA) Rosen Arye (Cherry Hill NJ) Greenspon Arnold J. (Jenkintown PA), Method and apparatus for high frequency catheter ablation.
Goldreyer Bruce N. (30311 Palos Verdes Dr. East Rancho Palos Verdes CA 90275), Method and apparatus for spatially specific electrophysiological sensing in a catheter with an enlarged ablating electro.
Broadwin Alan (Brooklyn NY) Kreizman Alexander (Stamford CT) Puiam Chana (Queens NY) Podany Vaclav O. (East New Fairfield CT) Emery Leonard M. (West Haven CT), Method and apparatus for ultrasonic surgical fragmentation and removal of tissue.
Evans Michael A. (Palo Alto CA) Nichols Colin J. (Fremont CA) Kemp Laura (Saratoga CA) Dubrul William R. (Redwood city CA) Behl Robert S. (Palo Alto CA), Method and device for thermal ablation having improved heat transfer.
Nichols Colin J. (Fremont CA) Dubrul William R. (Redwood City CA) Behl Robert S. (Palo Alto CA), Method and device for thermal ablation having improved heat transfer.
Neilson Bruce H. (Brooklyn Park MN) Rudie Eric N. (Plymouth MN) Dann Mitchell (Wayzata MN), Method for treating interstitial tissue associated with microwave thermal therapy.
Tasto, James P.; Woloszko, Jean; Baker, Michael A.; Pacek, James L.; Eggers, Philip E.; Thapliyal, Hira V., Methods for electrosurgical tendon vascularization.
Buys Bruno (Lille FRX) Sozanski Jean-Pierre (Thumeries FRX) Mordon Serge (Villeneuve d\Asco FRX) Brunetaud Jean-Marc (La Madeleine FRX) Moschetto Yves (Haubourdin FRX), Process for treatment by irradiating an area of a body, and treatment apparatus usable in dermatology for the treatment.
Aita Michael ; Burkhoff Daniel ; Yamamoto Noriyoshi,JPX ; Taimisto Miriam H. ; Aron Kenneth P. ; Danek Christopher J., Revascularization with RF ablation.
Bonnell Leonard J. (Medford MA) McHugh Edward H. (Southboro MA) Sjostrom Douglas D. (Wakefield MA) Johnson Lanny L. (Okemos MI), Surgical instrument suitable for closed surgery such as of the knee.
Panescu Dorin ; Fleischman Sidney D. ; Whayne James G. ; Swanson David K., Systems and methods for controlling tissue ablation using multiple temperature sensing elements.
Panescu Dorin Nmi ; Whayne James G. ; Fleischman Sidney D. ; Swanson David K., Systems and methods for controlling tissue ablation using multiple temperature sensing elements.
Panescu Dorin (Sunnyvale CA) Swanson David K. (Mountain View CA) Fleischman Sidney D. (Menlo Park CA) Bourne Thomas M. (Mountain View CA), Systems and methods for sensing multiple temperature conditions during tissue ablation.
Ryan Dana W. (Davie FL) Slater Charles R. (Fort Lauderdale FL) Solar Matthew S. (Cooper City FL) Turkel David (Miami FL), Tubing for endoscopic electrosurgical suction-irrigation instrument.
Turner Paul F. (North Salt Lake UT) Schaefermeyer Theron N. (North Salt Lake UT) Tumeh Amer M. (Salt Lake City UT), Urethral inserted applicator for prostate hyperthermia.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.