Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Patent
1996-03-06
1998-09-01
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
607113, 607 99, 607153, 607122, 606 41, A61B 1739
Patent
active
058004823
ABSTRACT:
An apparatus for ablating body tissue, and particularly for creating linear lesions within a chamber of a patient's heart, includes an elongate member having an ablation section. The ablation section includes an infusion tube and a plurality of spaced electrodes. The infusion tube and electrodes are covered by a fluid permeable foam material, and the foam material is covered by a fluid impermeable covering having a plurality of holes formed in it. During use, the ablation section is positioned against tissue to be ablated. Radiofrequency energy is delivered to the electrodes while saline or other conductive fluid is delivered to the infusion tube. The fluid exits the infusion tube at the ablation section, contacts the electrodes, and carries RF energy from the electrodes through the foam, through the holes in the covering and into contact with the body tissue to form a burn in the body tissue.
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Chapman Troy J.
Imran Mir
Pomeranz Mark L.
Sherman Darren R.
Cardiac Pathways Corporation
Kamm William E.
Schaetzle Kennedy J.
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