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WO1995020361B1 - Methode pour localiser les sites d'arythmie en vue de leur ablation - Google Patents

Methode pour localiser les sites d'arythmie en vue de leur ablation

Info

Publication number
WO1995020361B1
WO1995020361B1 PCT/US1994/014378 US9414378W WO9520361B1 WO 1995020361 B1 WO1995020361 B1 WO 1995020361B1 US 9414378 W US9414378 W US 9414378W WO 9520361 B1 WO9520361 B1 WO 9520361B1
Authority
WO
WIPO (PCT)
Prior art keywords
impedance
measuring
electrode
catheter
endocardium
Prior art date
Application number
PCT/US1994/014378
Other languages
English (en)
Other versions
WO1995020361A1 (fr
Filing date
Publication date
Priority claimed from US08/188,514 external-priority patent/US5447529A/en
Application filed filed Critical
Priority to AU14358/95A priority Critical patent/AU1435895A/en
Publication of WO1995020361A1 publication Critical patent/WO1995020361A1/fr
Publication of WO1995020361B1 publication Critical patent/WO1995020361B1/fr

Links

Abstract

Une méthode de localisation de tissu myocardique infarci consiste à insérer une extrémité (10) d'un cathéter (14) servant à mesurer l'impédance dans une cavité d'un coeur en activité et à mesurer l'impédance de l'endocarde à différents emplacements dans ce coeur en activité. Les valeurs mesurées sont comparées à des valeurs d'impédance dans une gamme prédéterminée de valeurs (22), pour identifier une zone infarcie du myocarde et la distinguer du myocarde sain (20). Egalement, on compare les mesures à une gammme de valeurs valables pour une zone limite d'infarcissement. La zone limite d'infarcissement est une source importante d'arythmie et en particulier de tachycardie ventriculaire. Les méthodes de la présente invention permettent de diminuer, voire d'éliminer sensiblement le risque d'arythmie cardiaque, par une ablation de l'endocarde à l'intérieur de la zone limite d'infarcissement, en utilisant la même extrémité du cathéter.
PCT/US1994/014378 1994-01-28 1994-12-12 Methode pour localiser les sites d'arythmie en vue de leur ablation WO1995020361A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU14358/95A AU1435895A (en) 1994-01-28 1994-12-12 Method of determining sites for arrhythmia ablation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/188,514 1994-01-28
US08/188,514 US5447529A (en) 1994-01-28 1994-01-28 Method of using endocardial impedance for determining electrode-tissue contact, appropriate sites for arrhythmia ablation and tissue heating during ablation

Publications (2)

Publication Number Publication Date
WO1995020361A1 WO1995020361A1 (fr) 1995-08-03
WO1995020361B1 true WO1995020361B1 (fr) 1995-08-17

Family

ID=22693477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/014378 WO1995020361A1 (fr) 1994-01-28 1994-12-12 Methode pour localiser les sites d'arythmie en vue de leur ablation

Country Status (4)

Country Link
US (3) US5447529A (fr)
AU (1) AU1435895A (fr)
CA (1) CA2179058A1 (fr)
WO (1) WO1995020361A1 (fr)

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