CA2141118A1 - Improved electrophysiological mapping and ablation catheter and method - Google Patents

Improved electrophysiological mapping and ablation catheter and method

Info

Publication number
CA2141118A1
CA2141118A1 CA002141118A CA2141118A CA2141118A1 CA 2141118 A1 CA2141118 A1 CA 2141118A1 CA 002141118 A CA002141118 A CA 002141118A CA 2141118 A CA2141118 A CA 2141118A CA 2141118 A1 CA2141118 A1 CA 2141118A1
Authority
CA
Canada
Prior art keywords
electrode
dissipating
gold
mass
alloy
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002141118A
Other languages
French (fr)
Other versions
CA2141118C (en
Inventor
David Lipson
Marc Jensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cardiac Pacemakers Inc
Original Assignee
Cardiac Pacemakers, Inc.
David Lipson
Marc Jensen
Heart Rhythm Technologies, 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 Cardiac Pacemakers, Inc., David Lipson, Marc Jensen, Heart Rhythm Technologies, Inc. filed Critical Cardiac Pacemakers, Inc.
Publication of CA2141118A1 publication Critical patent/CA2141118A1/en
Application granted granted Critical
Publication of CA2141118C publication Critical patent/CA2141118C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/283—Invasive
    • A61B5/287—Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
    • A61B2562/0215—Silver or silver chloride containing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/043—Arrangements of multiple sensors of the same type in a linear array

Abstract

A mapping and ablating catheter having a short distal tip electrode comprising a bio-compatible outer surface and a thermal dissipating mass for dissipating heat received by the electrode. The outer surface may be formed by plating a thin layer of gold or platinum on the dissipating mass, or the entire electrode may be formed of a homogenous material such as a gold alloy that is bio-compatible thereby forming the outer surface with the mass itself.
An alloy having a thermal conductivity greater than pure platinum is used so that the ablation procedure can be completed before exceeding the temperature limits. In one case, the entire electrode was formed of a 88% gold 12% nickel alloy. The electrical feed to the electrode is oversized to also dissipate heat received by the electrode. The electrode is no greater than five mm in length yet produces an ablation volume equal to or greater than longer electrodes.
One or more band electrodes may also include thermal dissipating masses.
CA002141118A 1994-01-28 1995-01-25 Improved electrophysiological mapping and ablation catheter and method Expired - Fee Related CA2141118C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/188,187 US6099524A (en) 1994-01-28 1994-01-28 Electrophysiological mapping and ablation catheter and method
US08/188,187 1994-01-28

Publications (2)

Publication Number Publication Date
CA2141118A1 true CA2141118A1 (en) 1995-07-29
CA2141118C CA2141118C (en) 2002-10-08

Family

ID=22692095

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002141118A Expired - Fee Related CA2141118C (en) 1994-01-28 1995-01-25 Improved electrophysiological mapping and ablation catheter and method

Country Status (4)

Country Link
US (1) US6099524A (en)
EP (1) EP0664990A3 (en)
JP (1) JPH0838501A (en)
CA (1) CA2141118C (en)

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