Multiple electrode ablation apparatus and method

Details Multiple electrode ablation apparatus and method Multiple electrode ablation apparatus and method

1997-11-17

2000-07-18

Peffley, Michael

Surgery

Instruments

Electrical application

607101, 607102, A61B 1739

Patent

active

060901055

ABSTRACT:
An ablation apparatus includes an introducer with a distal end sufficiently sharp to penetrate tissue. An energy delivery device is configured to be coupled to an energy source. The energy delivery device includes a first electrode and a second electrode each with a tissue piercing distal portion. The first and second electrodes are at least partially positionable in the introducer and deployable from the introducer at a selected tissue site to an expanded state. In the expanded state the deployed first and second electrodes distend laterally away from the introducer with a radius of curvature to form a shaped array of deployed electrodes at the tissue site when positioned at the selected tissue site. The first electrode distal portion and the second electrode distal portion are each at least partially made of a shaped memory alloy material that displays stress induced martensite behavior above body temperature. A cable couples the energy source to the energy delivery device.

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