Microwave thermal therapy of cardiac tissue

Details Microwave thermal therapy of cardiac tissue Microwave thermal therapy of cardiac tissue

1996-12-20

1999-01-19

Peffley, Michael

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Thermal applicators

607102, 607105, 607113, 607156, A61N 502

Patent

active

058610219

ABSTRACT:
A method of applying microwave energy to cardiac tissue uses a catheter adapted for insertion into a cardiac chamber and which includes a microwave antenna, a cooling lumen structure, and an inflatable cooling balloon. Necrosing levels of microwave energy are delivered from the microwave antenna to diseased cardiac tissue spaced from the catheter. Tissues immediately surrounding the catheter are cooled and microwave energy emitted by the antenna is selectively absorbed by the cooling lumen structure surrounding the antenna. The cooling balloon of the catheter is positioned adjacent the antenna and partially surrounds the cooling lumen structure on one side of the catheter to provide additional cooling capability and additional microwave energy absorption on the side of the catheter opposite the diseased cardiac tissue to prevent unwanted heating of blood within the cardiac chamber.

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