05810764 is referenced by 431 patents and cites 92 patents.

An electrosurgical resecting instrument is provided having a resecting loop electrode on the distal end of a shaft and coupled to a high frequency voltage source. The loop electrode is configured to fit within a working end of a resectoscope (discussed below) and to remove small portions of tissue (e.g., chips of tissue). The loop electrode includes an active portion with a surface geometry configured to promote substantially high electric field intensities and associated current densities between the active portion and the target site when a high frequency voltage is applied to the electrode. The edges of the electrode are oriented substantially parallel to the shaft so that they will face the tissue as the electrode is moved axially in the cutting direction. This orientation facilitates formation of the vapor layer between the electrode edges and the tissue. The opposite or non-active side of the electrode may include an insulating layer to selectively reduce undesirable current flow from the non-active portion into tissue or surrounding electrically conducting liquids.

Title
Resecting loop electrode and method for electrosurgical cutting and ablation
Application Number
817575
Publication Number
5810764
Application Date
July 18, 1996
Publication Date
September 22, 1998
Inventor
Hira V Thapliyal
Los Altos
CA, US
Philip E Eggers
Dublin
OH, US
Agent
John T Raffle
Assignee
ArthroCare Corporation
CA, US
IPC
A61B 17/39
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