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Medical probe device and method

  • US 6,129,726 A
  • Filed: 03/17/1999
  • Issued: 10/10/2000
  • Est. Priority Date: 08/12/1992
  • Status: Expired due to Term
First Claim
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1. A stylet assembly for use in electrosurgical ablation procedures, said stylet assembly comprising a needle electrode having a body including a sharpened tip for penetrating target and intervening tissues and an insulating sleeve disposed around a predetermined portion of said body of said needle electrode and having a size and shape for penetrating said intervening tissues whereby said insulating sleeve provides insulation between a portion of said body of said needle electrode and said intervening tissues when an electrical stimulus is applied to said needle electrode, said insulating sleeve being movable relative to said body of said needle electrode such that movement of said insulating sleeve may be used to vary a length of said needle electrode which is exposed to said target tissue.

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