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Electrode for electrosurgical ablation of tissue

  • US 6,461,357 B1
  • Filed: 06/25/1999
  • Issued: 10/08/2002
  • Est. Priority Date: 02/12/1997
  • Status: Expired due to Term
First Claim
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1. A surgical apparatus, comprising:

  • an energy application tip including;

    a length of shaft having an end; and

    an active electrode extending distally of the end of the shaft, the active electrode having a base formed by the end of the shaft and a substantially cylindrical wall extending distally of the base, the wall having a convex outer surface extending distally and radially outwardly to a substantially circular current-density concentrating edge forming a rim of the active electrode.

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