WO2001022895A8 - Electrode contact evaluation and ablation system, and method of use - Google Patents

Electrode contact evaluation and ablation system, and method of use

Info

Publication number
WO2001022895A8
WO2001022895A8 PCT/US2000/025440 US0025440W WO0122895A8 WO 2001022895 A8 WO2001022895 A8 WO 2001022895A8 US 0025440 W US0025440 W US 0025440W WO 0122895 A8 WO0122895 A8 WO 0122895A8
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
during
gauge
tissue contact
electrode
Prior art date
Application number
PCT/US2000/025440
Other languages
French (fr)
Other versions
WO2001022895A1 (en
Inventor
Gary S Falwell
Original Assignee
Bard Inc C R
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 Bard Inc C R filed Critical Bard Inc C R
Priority to JP2001526113A priority Critical patent/JP2003510125A/en
Priority to EP00963544A priority patent/EP1214007B1/en
Priority to DE60020577T priority patent/DE60020577T2/en
Publication of WO2001022895A1 publication Critical patent/WO2001022895A1/en
Publication of WO2001022895A8 publication Critical patent/WO2001022895A8/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
    • A61B18/1206—Generators 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • A61B2018/00815—Temperature measured by a thermistor
    • 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

The system and methods of the invention gauge the amount or quality of the contact between body tissue and one or more electrodes supported on a catheter. In further aspects, the invention concerns methods for controlling power delivery to particular electrodes on a catheter in response to tissue contact data derived from that electrode or other electrodes during the ablation procedure. The invention monitors and processes information concerning the number of pulses of pulsed radio-frequency energy that are delivered during an ablation procedure. The amount or quality of tissue contact is gauged by comparing the number of pulses delivered to a particular electrode during the interval to either the number of pulses delivered to at least one other electrode of the plural electrodes or data derived during the ablation procedure. The system and method can provide a display of the gauge of tissue contact among the various electrodes and also can automatically control distribution of pulsed RF energy in response to the gauge of tissue contact.
PCT/US2000/025440 1999-09-24 2000-09-14 Electrode contact evaluation and ablation system, and method of use WO2001022895A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001526113A JP2003510125A (en) 1999-09-24 2000-09-14 Electrode contact evaluation and ablation system and method of use
EP00963544A EP1214007B1 (en) 1999-09-24 2000-09-14 Electrode contact evaluation and ablation system
DE60020577T DE60020577T2 (en) 1999-09-24 2000-09-14 ELECTRODE CONTACT CHECK AND ABLATION SYSTEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/405,246 1999-09-24
US09/405,246 US6264653B1 (en) 1999-09-24 1999-09-24 System and method for gauging the amount of electrode-tissue contact using pulsed radio frequency energy

Publications (2)

Publication Number Publication Date
WO2001022895A1 WO2001022895A1 (en) 2001-04-05
WO2001022895A8 true WO2001022895A8 (en) 2001-10-11

Family

ID=23602890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/025440 WO2001022895A1 (en) 1999-09-24 2000-09-14 Electrode contact evaluation and ablation system, and method of use

Country Status (6)

Country Link
US (1) US6264653B1 (en)
EP (1) EP1214007B1 (en)
JP (1) JP2003510125A (en)
DE (1) DE60020577T2 (en)
ES (1) ES2243303T3 (en)
WO (1) WO2001022895A1 (en)

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Also Published As

Publication number Publication date
ES2243303T3 (en) 2005-12-01
WO2001022895A1 (en) 2001-04-05
JP2003510125A (en) 2003-03-18
DE60020577D1 (en) 2005-07-07
EP1214007B1 (en) 2005-06-01
EP1214007A1 (en) 2002-06-19
DE60020577T2 (en) 2006-04-27
US6264653B1 (en) 2001-07-24

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