WO2004002293A3 - Systems and methods for electrosurgical tissue treatment - Google Patents

Systems and methods for electrosurgical tissue treatment Download PDF

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Publication number
WO2004002293A3
WO2004002293A3 PCT/US2003/020574 US0320574W WO2004002293A3 WO 2004002293 A3 WO2004002293 A3 WO 2004002293A3 US 0320574 W US0320574 W US 0320574W WO 2004002293 A3 WO2004002293 A3 WO 2004002293A3
Authority
WO
WIPO (PCT)
Prior art keywords
plasma
active electrode
adjacent
high frequency
tissue
Prior art date
Application number
PCT/US2003/020574
Other languages
French (fr)
Other versions
WO2004002293A2 (en
Inventor
Jean Woloszko
Michael A Baker
Robert H Dahla
Hardev Kahlon
Adelina Villaruel
Cindy Truc Nguyen
Irma Gutierrez
Original Assignee
Arthrocare Corp
Jean Woloszko
Michael A Baker
Robert H Dahla
Hardev Kahlon
Adelina Villaruel
Cindy Truc Nguyen
Irma Gutierrez
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
Application filed by Arthrocare Corp, Jean Woloszko, Michael A Baker, Robert H Dahla, Hardev Kahlon, Adelina Villaruel, Cindy Truc Nguyen, Irma Gutierrez filed Critical Arthrocare Corp
Priority to EP03762238A priority Critical patent/EP1571969B1/en
Priority to AT03762238T priority patent/ATE544391T1/en
Priority to AU2003248766A priority patent/AU2003248766A1/en
Priority to US10/661,118 priority patent/US7276063B2/en
Publication of WO2004002293A2 publication Critical patent/WO2004002293A2/en
Publication of WO2004002293A3 publication Critical patent/WO2004002293A3/en
Priority to US11/865,297 priority patent/US8663216B2/en

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
    • A61B18/14—Probes or electrodes therefor
    • A61B18/148—Probes or electrodes therefor having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
    • 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
    • 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
    • A61B18/042—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating using additional gas becoming plasma
    • 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
    • A61B2018/00577—Ablation
    • 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
    • A61B2018/00577—Ablation
    • A61B2018/00583—Coblation, i.e. ablation using a cold plasma
    • 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
    • A61B2018/1213—Generators therefor creating an arc
    • 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
    • A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes

Abstract

Systems and methods are provided for applying a high frequency voltage in the presence of an electrically conductive fluid to create a relatively low-temperature plasma for ablation of tissue adjacent to, or in contact with, the plasma. In one embodiment, an electrosurgical probe or catheter is positioned adjacent the target site so that one or more active electrode(s) are brought into contact with, or close proximity to, a target tissue in the presence of electrically conductive fluid. High frequency voltage is then applied between the active electrode(s) and one or more return electrode(s) to non-thermally generate a plasma adjacent to the active electrode(s), and to volumetrically remove or ablate at least a portion of the target tissue. The high frequency voltage generates electric fields around the active electrode(s) with sufficient energy to ionize the conductive fluid adjacent to the active electrode(s). Within the ionized gas or plasma, free electrons are accelerated, and electronatoms collisions liberate more electrons, and the process cascades until the plasma contains sufficient energy to break apart the tissue molecules, causing molecular dissociation and ablation of the target tissue.
PCT/US2003/020574 1998-08-11 2003-06-27 Systems and methods for electrosurgical tissue treatment WO2004002293A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03762238A EP1571969B1 (en) 2002-06-27 2003-06-27 System for electrosurgical tissue treatment
AT03762238T ATE544391T1 (en) 2002-06-27 2003-06-27 SYSTEMS FOR ELECTROSURGICAL TISSUE TREATMENT
AU2003248766A AU2003248766A1 (en) 2002-06-27 2003-06-27 Systems and methods for electrosurgical tissue treatment
US10/661,118 US7276063B2 (en) 1998-08-11 2003-09-12 Instrument for electrosurgical tissue treatment
US11/865,297 US8663216B2 (en) 1998-08-11 2007-10-01 Instrument for electrosurgical tissue treatment

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/187,733 2002-06-27
US10/187,733 US7435247B2 (en) 1998-08-11 2002-06-27 Systems and methods for electrosurgical tissue treatment

Publications (2)

Publication Number Publication Date
WO2004002293A2 WO2004002293A2 (en) 2004-01-08
WO2004002293A3 true WO2004002293A3 (en) 2005-07-28

Family

ID=29999396

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/020574 WO2004002293A2 (en) 1998-08-11 2003-06-27 Systems and methods for electrosurgical tissue treatment

Country Status (5)

Country Link
US (1) US7435247B2 (en)
EP (1) EP1571969B1 (en)
AT (1) ATE544391T1 (en)
AU (1) AU2003248766A1 (en)
WO (1) WO2004002293A2 (en)

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EP1571969B1 (en) 2012-02-08
EP1571969A2 (en) 2005-09-14
ATE544391T1 (en) 2012-02-15
AU2003248766A1 (en) 2004-01-19
US7435247B2 (en) 2008-10-14
EP1571969A4 (en) 2006-07-05
WO2004002293A2 (en) 2004-01-08
AU2003248766A8 (en) 2004-01-19
US20030028189A1 (en) 2003-02-06

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