RF ablation apparatus and method using unipolar and bipolar tech

Details RF ablation apparatus and method using unipolar and bipolar tech RF ablation apparatus and method using unipolar and bipolar tech

1998-05-05

2000-05-09

Dvorak, Linda C. M.

Surgery

Instruments

Electrical application

606 35, 606 41, 606 42, 606 50, 607101, 607102, 607122, 607154, A61B 1804

Patent

active

06059778&

ABSTRACT:
An apparatus for delivering energy to a biological site includes an electrode device having a plurality of electrodes, the electrode device positioned proximal the biological site. A power control system supplies power having a controllable phase angle to each of the electrodes. A backplate is also positioned proximal the biological site so that the biological site is interposed between the electrode device and the backplate. The backplate is maintained at the reference voltage level in relation to the power. The power control system controls the phase angle of the power so that the current flow between the electrodes and between the electrodes and the backplate results in the continuity and depth of lesions desired. In a preferred embodiment, the electrodes are arranged in a substantially linear array.

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