×

Electrosurgical Device Having Floating Potential Electrode and Adapted for Use With a Resectoscope

  • US 20080077129A1
  • Filed: 09/21/2007
  • Published: 03/27/2008
  • Est. Priority Date: 09/27/2006
  • Status: Active Grant
First Claim
Patent Images

1. An electrosurgical instrument comprising:

  • (a) an elongate shaft having a proximal end configured for connection to an electrosurgical power source and a distal end having an electrode assembly mounted thereto;

    (b) a conductive member coupled to the elongate shaft and extending between the proximal and distal ends thereof;

    (c) an electrode assembly having an active surface that forms an acute angle with the longitudinal axis of the shaft and comprising an active electrode, a floating electrode, and an insulator separating said active and floating electrodes;

    wherein said active surface comprises a continuous or discontinuous array of raised and recessed portions that creates regions of high current density for high efficiency vaporization of tissue;

    further wherein said insulator is formed from a nonconductive dielectric material while said active and floating electrodes are formed from an electrically conductive material;

    further wherein said active and floating electrodes are positioned in close proximity to each other;

    further wherein said active electrode is electrically connected to said conductive member while said floating electrode is not connected to either the conductive member or the electrosurgical power source.

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