WO2004073503A3 - Apparatus and method for assessing transmuarlity of a tissue ablation - Google Patents

Apparatus and method for assessing transmuarlity of a tissue ablation Download PDF

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Publication number
WO2004073503A3
WO2004073503A3 PCT/US2004/005052 US2004005052W WO2004073503A3 WO 2004073503 A3 WO2004073503 A3 WO 2004073503A3 US 2004005052 W US2004005052 W US 2004005052W WO 2004073503 A3 WO2004073503 A3 WO 2004073503A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
tissue
transmuarlity
assessing
instrument
Prior art date
Application number
PCT/US2004/005052
Other languages
French (fr)
Other versions
WO2004073503A2 (en
Inventor
Pierre-Antoine Chapelon
Dany Berube
Hiep Nguyen
Faouzi Kallel
Original Assignee
Afx 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 Afx Inc filed Critical Afx Inc
Publication of WO2004073503A2 publication Critical patent/WO2004073503A2/en
Publication of WO2004073503A3 publication Critical patent/WO2004073503A3/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
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017—Electrical control of surgical instruments
    • A61B2017/00022—Sensing or detecting at the treatment site
    • A61B2017/00026—Conductivity or impedance, e.g. of tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A61B2017/00243—Type of minimally invasive operation cardiac
    • 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
    • A61B2018/00696—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
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance

Abstract

An instrument is provided to assess the transmurality of an ablation lesion from a first surface of a targeted biological tissue to an opposed second surface thereof. The instrument includes at least a first electrode operably attached to an ablation instrument adapted to engage a tissue first surface, and at least a second electrode adapted to engage a tissue second surface, the at least second electrode positioned generally opposed to the at least first electrode. Alternatively, the at least second electrode may be adapted to be placed within a chamber of an organ. These electrodes each measure at least; one of conduction time, conduction velocity, phase angle, and impedance through at least a portion of the targeted tissue to determine the transmurality of the ablation lesion.
PCT/US2004/005052 2003-02-19 2004-02-19 Apparatus and method for assessing transmuarlity of a tissue ablation WO2004073503A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/369,887 2003-02-19
US10/369,887 US7192427B2 (en) 2002-02-19 2003-02-19 Apparatus and method for assessing transmurality of a tissue ablation

Publications (2)

Publication Number Publication Date
WO2004073503A2 WO2004073503A2 (en) 2004-09-02
WO2004073503A3 true WO2004073503A3 (en) 2005-03-03

Family

ID=32907657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/005052 WO2004073503A2 (en) 2003-02-19 2004-02-19 Apparatus and method for assessing transmuarlity of a tissue ablation

Country Status (2)

Country Link
US (2) US7192427B2 (en)
WO (1) WO2004073503A2 (en)

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US20070149967A1 (en) 2007-06-28
US7192427B2 (en) 2007-03-20
WO2004073503A2 (en) 2004-09-02
US7497858B2 (en) 2009-03-03

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