Multipolar, virtual-electrode catheter with at least one...

Details Multipolar, virtual-electrode catheter with at least one... Multipolar, virtual-electrode catheter with at least one...

2011-02-01

2011-02-01

Cohen, Lee S (Department: 3739)

Surgery

Instruments

Electrical application

C607S105000

Reexamination Certificate

active

07879030

ABSTRACT:
Virtual-electrode catheters and methods for using such virtual-electrode catheters are disclosed. For example, bipolar and multipolar, virtual-electrode catheters having at least one internal electrode and at least one surface electrode, and methods of using these catheters for treatment of cardiac arrhythmias via, for example, radiofrequency (RF) ablation are disclosed. The catheters may comprise a catheter body with an internal lumen extending within it and adapted to flowingly receive a conductive fluid. An exit feature defining a flow path from the internal lumen to the catheter's outer surface may exist through a sidewall of the catheter body. A conductor is mounted within the internal lumen adjacent to the exit feature and is adapted to deliver treatment energy to the tissue via the conductive fluid in the internal lumen. At least one surface electrode is mounted on the outer surface of the catheter body adjacent to the exit feature.

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PCT International Search Report and Written Opinion of the International Searching Authority for PCT/US06/28912. dated Feb 20, 2007, 8 pages.

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