Patent ID: 7566333
Filing Date: 2009-07-28
Classification: A61B

Abstract:
1. A monopolar electrosurgical probe comprising: (a) an elongate shaft having an insulated proximal portion forming a handle and an exposed conductive portion disposed in a distal tip region; (b) at least one lumen disposed along the length of said shaft, said lumen having a first port disposed at the proximal end of said shaft and a second port disposed at the distal end of said shaft; (c) at least one active electrode located at or near the distal tip of said shaft, said active electrode connected via cabling disposed within said handle to a power supply; (d) at least one conductive member disposed at the distal end, wherein said conductive member comprises a floating potential electrode that is not connected to any power supply, said floating potential electrode having a first portion mounted in close proximity to said active electrode and a second portion extended a distance from said active electrode and positioned in a region of low electric potential so as to concentrate the power in the vicinity of the active electrode and increase the energy density in the region surrounding the active electrode; and (e) a dielectric member disposed between each active electrode and floating potential electrode.