Surgery – Instruments – Electrical application
Patent
1995-03-24
1999-02-09
Cohen, Lee S.
Surgery
Instruments
Electrical application
606 49, 606 50, 607 99, 607113, 607116, A61B 1739
Patent
active
058687408
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-Frequnecy Electrocautery in the Aminal Model", vol. 3, No. 2, May, 1992.
Fox Randy
LeVeen Robert F.
Board of Regents--Univ of Nebraska
Cohen Lee S.
Frederiksen Mark D.
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