×

Electrosurgical system with uniformly enhanced electric field and minimal collateral damage

  • US 7,357,802 B2
  • Filed: 02/13/2004
  • Issued: 04/15/2008
  • Est. Priority Date: 02/14/2003
  • Status: Expired due to Term
First Claim
Patent Images

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 configured to connect to said blade,wherein said source of pulsed electrical energy is configured to apply a plurality of bursts of pulses separated by a burst interval of greater than about 1 ms during which no pulses are present and wherein the duration of the burst of pulses is 1 ms or less;

    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.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×