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Monopole tip for ablation catheter and methods for using same

  • US 6,277,113 B1
  • Filed: 05/28/1999
  • Issued: 08/21/2001
  • Est. Priority Date: 05/28/1999
  • Status: Expired due to Fees
First Claim
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1. An ablation catheter comprising:

  • an elongated flexible tubular member, the elongated flexible tubular member being arranged to be inserted into the body of a patient;

    a transmission line disposed within the tubular member, the transmission line having a distal end and a proximal end, wherein the proximal end of the transmission line is suitable for connection to an electromagnetic energy source; and

    a monopole antenna, the monopole antenna having a tip section and a body section, the body section including a distal end and a proximal end, and having a longitudinal length substantially longer than a width thereof, said body section further tapering inwardly from the distal end toward the proximal end thereof such that the tip section and the body section produce a substantially uniform electric field around the monopole antenna, the substantially uniform electric field being sufficiently strong to cause tissue ablation, wherein the proximal end of the body section of the monopole antenna is arranged to be electrically coupled to the transmission line.

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