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ELECTROSURIGICAL INSTRUMENT AND METHOD

  • US 20090281535A1
  • Filed: 03/18/2009
  • Published: 11/12/2009
  • Est. Priority Date: 10/22/2001
  • Status: Active Grant
First Claim
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1. A method for delivering energy to endoluminal tissue, comprising the steps of:

  • providing a catheter configured for endoluminal navigation, a catheter working end having an electrosurgical surface including a positive temperature coefficient of resistance (PTCR) material carried in the surface;

    engaging endoluminal tissue with the electro surgical surface; and

    delivering Rf current to the endoluminal tissue wherein said Rf current flows are limited by changes in temperature in at least portions of the PTCR material to prevent arcing.

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