06004319 is referenced by 504 patents and cites 452 patents.

In an electrosurgical instrument for the treatment of tissue in the presence of an electrically conductive fluid medium a bipolar electrode assembly has an active electrode with an exposed tissue treatment portion, a return electrode having an exposed fluid contact surface, and an insulating member positioned between and electrically insulating the active electrode in the return electrode. The insulating member serves to space apart the exposed active electrode treatment portion and the exposed fluid contact portion of the return electrode. The dimensions and configurations of the exposed portions of the electrodes and of the insulating member are such that when the electrode assembly is immersed in a conductive fluid medium, the ratio between the longest and shortest conduction path lengths between the active and return electrodes is less than or equal to 2:1. The invention also includes a combination of an electrosurgical instrument and a radio frequency generator.

Title
Electrosurgical instrument
Application Number
8/702512
Publication Number
6004319
Application Date
August 26, 1996
Publication Date
December 21, 1999
Inventor
Colin Charles Owen Goble
Penarth
GB
Nigel Mark Goble
Cardiff
GB
Agent
Nixon & Vanderhye P C
Assignee
Gyrus Medical
GB
IPC
A61B 17/36
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