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Electrosurgical systems and methods for recanalization of occluded body lumens

  • US 6,855,143 B2
  • Filed: 12/12/2000
  • Issued: 02/15/2005
  • Est. Priority Date: 06/13/1997
  • Status: Expired due to Term
First Claim
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1. An electrosurgical catheter, comprising:

  • a shaft having a shaft proximal end portion and a shaft distal end portion;

    an electrode support arranged on the shaft distal end portion, the electrode support having a support distal end;

    at least one active electrode disposed on the support distal end, wherein the at least one active electrode comprises a metal wire comprising from about 75% to about 99.95% platinum and from about 0.05% to about 25% iridium; and

    at least one return electrode disposed on the shaft distal end portion and wherein the at least one return electrode is arranged on an insulating liner, and the insulating liner is disposed on the shaft.

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