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Electrosurgical system with uniformly enhanced electric field and minimal collateral damage

  • US 20040236321A1
  • Filed: 02/13/2004
  • Published: 11/25/2004
  • Est. Priority Date: 02/14/2003
  • Status: Active Grant
First Claim
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1. An electrosurgical cutting system, comprising:

  • a) an electrically conductive blade, said blade having a first surface, a second surface opposite said first surface, and an edge where said first and second surfaces meet, said edge having an edge radius of curvature, wherein a predetermined length of said edge is a cutting portion for cutting biological tissue;

    b) a first insulator on said first surface;

    c) a second insulator on said second surface; and

    d) a source of pulsed electrical energy electrically connected to said blade;

    wherein said cutting portion has an in-plane radius of curvature that is at least 10 times larger than said edge radius of curvature along the entire length of said cutting portion.

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