[go: up one dir, main page]

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

Intermittent ablation rf driving for moderating return electrode temperature Download PDF

Info

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
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2009/031586
Other languages
French (fr)
Other versions
WO2009094392A2 (en
Inventor
Gordon Epstein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Halt Medical Inc
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 US12/017,272 external-priority patent/US20090187183A1/en
Priority claimed from US12/017,282 external-priority patent/US20090138011A1/en
Priority claimed from US12/017,278 external-priority patent/US20090187177A1/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
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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 Ceased WO2009094392A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US12/017,272 2008-01-21
US12/017,282 2008-01-21
US12/017,278 2008-01-21
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
US12/017,278 US20090187177A1 (en) 2008-01-28 2008-01-28 Impedance responsive 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 Ceased 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
US8323279B2 (en) 2009-09-25 2012-12-04 Arthocare Corporation System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath
US8317786B2 (en) 2009-09-25 2012-11-27 AthroCare Corporation System, method and apparatus for electrosurgical instrument with movable suction sheath
US8696659B2 (en) * 2010-04-30 2014-04-15 Arthrocare Corporation Electrosurgical system and method having enhanced temperature measurement
US9649148B2 (en) 2014-07-24 2017-05-16 Arthrocare Corporation Electrosurgical system and method having enhanced arc prevention
US9597142B2 (en) 2014-07-24 2017-03-21 Arthrocare Corporation Method and system related to electrosurgical procedures
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
CN113645915B (en) * 2019-04-02 2024-11-29 悉尼大学 Methods and systems for monitoring tissue ablation by 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

Similar Documents

Publication Publication Date Title
WO2008112931A3 (en) Apparatus and method for moderating return electrode temperature
WO2009094392A3 (en) Intermittent ablation rf driving for moderating return electrode temperature
WO2013036469A3 (en) Surgical generator and related method for mitigating overcurrent conditions
WO2012018915A3 (en) Thermal control of solid state light sources by variable series impedance
WO2009094540A4 (en) Simplified maximum power point control utilizing the pv array voltage at the maximum power point
WO2012109450A3 (en) Dynamic frequency and pulse-width modulation of dual-mode switching power controllers in photovoltaic arrays
WO2009125265A3 (en) Power supply apparatus for vehicle and method of controlling power supply apparatus for vehicle
WO2014046294A3 (en) Power generation control device, photovoltaic power generation system and power generation control method
WO2012173707A3 (en) Methods and apparatus for constant power/current control for switch-mode power converters
WO2011037537A3 (en) Method for controlling a power converter in a wind turbine generator
WO2010003039A3 (en) Method for maximum power point tracking of photovoltaic cells by power converters and power combiners
WO2012061044A3 (en) Portable alternating current inverter having reduced impedance losses
WO2010096774A3 (en) Implantable micro-generator devices with optimized configuration, methods of use, systems and kits therefor
MX2012004449A (en) Solar generation method and system.
WO2013032753A3 (en) Systems and methods for switched-inductor integrated voltage regulators
AU2013398322A8 (en) Apparatus and method for providing a power interface
IN2014KN01763A (en)
WO2011055217A3 (en) Vehicular electric power unit and method of controlling the same
WO2012006092A3 (en) Communication within a power inverter using transformer voltage frequency
WO2012076951A3 (en) Led drivers and control methods
WO2012020144A3 (en) Switch mode power supply for envelope tracking
WO2012087869A3 (en) Mechanical arrangement of a multilevel power converter circuit
AU2011225422A8 (en) Photovoltaic generation system and power feeding system
WO2011043912A3 (en) Method and apparatus for power driving
WO2012123365A3 (en) Power generation unit driver, power generation unit and energy output equipment in power grid

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09704755

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09704755

Country of ref document: EP

Kind code of ref document: A2