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Catheter for mapping and ablation and method therefor

  • US 5,397,339 A
  • Filed: 05/07/1993
  • Issued: 03/14/1995
  • Est. Priority Date: 11/14/1986
  • Status: Expired due to Term
First Claim
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1. A method of mapping electrical signals and ablating foci at a patient site using a multipolar electrode catheter having a distal end and an opposite proximal end, a plurality of electrodes mounted adjacent said distal end, said electrodes being movable from a retracted to an expanded position, comprising the steps of:

  • (a) moving said electrodes to an expanded position from said retracted position;

    (b) positioning said distal end of said catheter so that said electrodes are in contacting relation with said site; and

    (c) monitoring signals from said electrodes.

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