Apparatus for volumetric tissue ablation

Details Apparatus for volumetric tissue ablation Apparatus for volumetric tissue ablation

1996-12-12

1998-10-27

Cohen, Lee S.

Surgery

Instruments

Electrical application

606 49, 606 50, 607 99, 607113, 607116, A61B 1739

Patent

active

058272763

ABSTRACT:
A volumetric tissue ablation apparatus includes a probe having a plurality of wires journaled through a catheter with a proximal end connected to the active terminal of a generator and a distal end projecting from a distal end of the catheter. The probe wire distal ends are arranged in an array with the distal ends located generally radially and uniformly spaced apart from the catheter distal end. A conductor connected to the return terminal of the generator is located relative to the probe wire array to form a closed electrical circuit through tissue to be ablated. Preferably, the probe wire array includes 10 wires, each formed in an arch from the catheter distal end. The conductor can be either a conventional ground plate upon which the tissue is supported, or a conductor wire extending through the probe and electrically insulated from the probe wires.

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Journal of Vascular and Interventional Radiology, "Hepatic Ablation with Use of Radio-Frequency Electrocautery in the Aminal Model", vol. 3, No. 2, May, 1992.

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