WO2005104972A3 - Electrode and bipolar ablation method using same - Google Patents

Electrode and bipolar ablation method using same Download PDF

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Publication number
WO2005104972A3
WO2005104972A3 PCT/US2005/012419 US2005012419W WO2005104972A3 WO 2005104972 A3 WO2005104972 A3 WO 2005104972A3 US 2005012419 W US2005012419 W US 2005012419W WO 2005104972 A3 WO2005104972 A3 WO 2005104972A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
electrodes
tissue
bipolar
location
Prior art date
Application number
PCT/US2005/012419
Other languages
French (fr)
Other versions
WO2005104972A2 (en
Inventor
Michael D Hooven
Original Assignee
Atricure 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
Application filed by Atricure Inc filed Critical Atricure Inc
Priority to EP05733828A priority Critical patent/EP1740115A4/en
Publication of WO2005104972A2 publication Critical patent/WO2005104972A2/en
Publication of WO2005104972A3 publication Critical patent/WO2005104972A3/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
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart 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
    • 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
    • A61B18/1482—Probes or electrodes therefor having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
    • 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
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • 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
    • A61B2018/00839—Bioelectrical parameters, e.g. ECG, EEG
    • 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
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1435—Spiral

Abstract

The present invention relates to a method and apparatus for creating transmural ablations in heart tissue which, for example, may include two or more electrodes adapted to be connected to opposite poles of a bipolar RF generator so as to energize the electrodes to ablate cardiac tissue between the electrodes. A first electrode may be inserted into cardiac tissue at a first location and a second electrode may be inserted into cardiac tissue at a second location which is spaced from the first location. At least one of the electrodes may be adapted to provide a sufficiently low current density in the vicinity of the electrode to avoid substantial tissue desiccation when energized. Alternatively, the apparatus may include at least one bipolar ablation electrode which comprises an elongated conductive member of spiral shape having a pitch sufficiently small to provide sufficient surface area to avoid substantial desiccation of tissue when energized by a bipolar RF generator.
PCT/US2005/012419 2004-04-14 2005-04-14 Electrode and bipolar ablation method using same WO2005104972A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05733828A EP1740115A4 (en) 2004-04-14 2005-04-14 Electrode and bipolar ablation method using same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US56193704P 2004-04-14 2004-04-14
US60/561,937 2004-04-14
US11/104,725 2005-04-13
US11/104,725 US7530980B2 (en) 2004-04-14 2005-04-13 Bipolar transmural ablation method and apparatus

Publications (2)

Publication Number Publication Date
WO2005104972A2 WO2005104972A2 (en) 2005-11-10
WO2005104972A3 true WO2005104972A3 (en) 2006-12-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/012419 WO2005104972A2 (en) 2004-04-14 2005-04-14 Electrode and bipolar ablation method using same

Country Status (3)

Country Link
US (1) US7530980B2 (en)
EP (1) EP1740115A4 (en)
WO (1) WO2005104972A2 (en)

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US20050234444A1 (en) 2005-10-20
WO2005104972A2 (en) 2005-11-10
US7530980B2 (en) 2009-05-12
EP1740115A4 (en) 2008-12-24
EP1740115A2 (en) 2007-01-10

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