WO2009094392A3 - Intermittent ablation rf driving for moderating return electrode temperature - Google Patents

Intermittent ablation rf driving for moderating return electrode temperature Download PDF

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Publication number
WO2009094392A3
WO2009094392A3 PCT/US2009/031586 US2009031586W WO2009094392A3 WO 2009094392 A3 WO2009094392 A3 WO 2009094392A3 US 2009031586 W US2009031586 W US 2009031586W WO 2009094392 A3 WO2009094392 A3 WO 2009094392A3
Authority
WO
WIPO (PCT)
Prior art keywords
average value
output
ablation
moderating
driving
Prior art date
Application number
PCT/US2009/031586
Other languages
French (fr)
Other versions
WO2009094392A2 (en
Inventor
Gordon Epstein
Original Assignee
Halt Medical Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US12/017,278 external-priority patent/US20090187177A1/en
Priority claimed from US12/017,272 external-priority patent/US20090187183A1/en
Priority claimed from US12/017,282 external-priority patent/US20090138011A1/en
Application filed by Halt Medical Inc. filed Critical Halt Medical Inc.
Publication of WO2009094392A2 publication Critical patent/WO2009094392A2/en
Publication of WO2009094392A3 publication Critical patent/WO2009094392A3/en

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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
    • A61B18/1233—Generators therefor with circuits for assuring patient safety
    • 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
    • A61B18/16—Indifferent or passive electrodes for grounding
    • 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
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • 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
    • A61B2018/00642—Sensing and controlling the application of energy with feedback, i.e. closed loop control
    • A61B2018/00654—Sensing and controlling the application of energy with feedback, i.e. closed loop control with individual control of each of a plurality of energy emitting elements
    • 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
    • A61B2018/00666—Sensing and controlling the application of energy using a threshold value
    • 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
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00702—Power or energy
    • 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
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00726—Duty cycle
    • 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
    • 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
    • A61B2018/00797—Temperature measured by multiple temperature sensors
    • 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
    • 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
    • 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
    • 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
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
    • 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
    • A61B18/16—Indifferent or passive electrodes for grounding
    • A61B2018/165—Multiple indifferent electrodes

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

An ablation system is disclosed. A first conductor is coupled to the first power output, second conductor is coupled to the second power output, and third conductor is coupled to a third power output on the source of electrical energy which creates a first output ablation voltage between the first and second power outputs. The first output ablation voltage varies between a higher average value during a first period of time and a lower average value for a second period of time. The lower average value is greater than or equal to zero. The source of electrical energy creates a second output ablation voltage between the first and third power outputs. The second output ablation voltage vanes between a higher average value during a third period of time and a lower average value for a fourth period of time. The lower average value is greater than or equal to zero.
PCT/US2009/031586 2008-01-21 2009-01-21 Intermittent ablation rf driving for moderating return electrode temperature WO2009094392A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US12/017,278 2008-01-28
US12/017,282 2008-01-28
US12/017,272 2008-01-28
US12/017,278 US20090187177A1 (en) 2008-01-28 2008-01-28 Impedance responsive ablation rf driving for moderating return electrode temperature
US12/017,272 US20090187183A1 (en) 2007-03-13 2008-01-28 Temperature responsive ablation rf driving for moderating return electrode temperature
US12/017,282 US20090138011A1 (en) 2007-03-13 2008-01-28 Intermittent ablation rf driving for moderating return electrode temperature

Publications (2)

Publication Number Publication Date
WO2009094392A2 WO2009094392A2 (en) 2009-07-30
WO2009094392A3 true WO2009094392A3 (en) 2010-01-07

Family

ID=40901857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/031586 WO2009094392A2 (en) 2008-01-21 2009-01-21 Intermittent ablation rf driving for moderating return electrode temperature

Country Status (1)

Country Link
WO (1) WO2009094392A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7276063B2 (en) 1998-08-11 2007-10-02 Arthrocare Corporation Instrument for electrosurgical tissue treatment
US8747400B2 (en) 2008-08-13 2014-06-10 Arthrocare Corporation Systems and methods for screen electrode securement
US8355799B2 (en) 2008-12-12 2013-01-15 Arthrocare Corporation Systems and methods for limiting joint temperature
US8317786B2 (en) 2009-09-25 2012-11-27 AthroCare Corporation System, method and apparatus for electrosurgical instrument with movable suction sheath
US8323279B2 (en) 2009-09-25 2012-12-04 Arthocare Corporation System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath
US8696659B2 (en) * 2010-04-30 2014-04-15 Arthrocare Corporation Electrosurgical system and method having enhanced temperature measurement
US9597142B2 (en) 2014-07-24 2017-03-21 Arthrocare Corporation Method and system related to electrosurgical procedures
US9649148B2 (en) 2014-07-24 2017-05-16 Arthrocare Corporation Electrosurgical system and method having enhanced arc prevention
CN106264711B (en) * 2015-06-12 2018-11-30 四川锦江电子科技有限公司 A kind of radio frequency ablation device of multi-electrode output
EP3946114A4 (en) * 2019-04-02 2023-01-18 The University Of Sydney Method and system for monitoring tissue ablation through constrained impedance measurements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6113595A (en) * 1995-12-14 2000-09-05 Bip Acquisition Company Inc. Device for the linear high-frequency catheter ablation of endomyocardial tissue
US6319249B1 (en) * 1998-04-15 2001-11-20 Biotronik Mess-Und Therapiegeraete Gmbh & Co. Ingenieurbuero Berlin Ablation system
US20030045871A1 (en) * 2001-08-31 2003-03-06 Jain Mudit K. Ablation system with selectable current path means
US20060241587A1 (en) * 2004-07-20 2006-10-26 Surginetics, Llc Multielectrode Electrosurgical Instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6113595A (en) * 1995-12-14 2000-09-05 Bip Acquisition Company Inc. Device for the linear high-frequency catheter ablation of endomyocardial tissue
US6319249B1 (en) * 1998-04-15 2001-11-20 Biotronik Mess-Und Therapiegeraete Gmbh & Co. Ingenieurbuero Berlin Ablation system
US20030045871A1 (en) * 2001-08-31 2003-03-06 Jain Mudit K. Ablation system with selectable current path means
US20060241587A1 (en) * 2004-07-20 2006-10-26 Surginetics, Llc Multielectrode Electrosurgical Instrument

Also Published As

Publication number Publication date
WO2009094392A2 (en) 2009-07-30

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