Method of controlling thermal therapy

Details Method of controlling thermal therapy Method of controlling thermal therapy

1998-12-11

2000-09-19

Dvorak, Linda C. M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Thermal applicators

607100, 607101, 607 96, A61F 200, A61F 700, A61F 712

Patent

active

061225517

ABSTRACT:
A thermal therapy method includes inserting a microwave antenna-containing applicator into a body cavity such as a urethra adjacent a targeted tissue region such as a prostate, energizing the microwave antenna, and circulating coolant between the microwave antenna and a wall of the body cavity. The therapy is controlled by decreasing a temperature of the coolant and continually adjusting coolant temperature based on other parameters. The applicator is maintained at a predetermined temperature set point by adjusting a power level provided to the microwave antenna. In one embodiment involving treatment of the prostate, rectal temperature is monitored and, upon sensing a rectal temperature that exceeds a predetermined threshold, the temperature of the coolant is increased to force a reduction in power provided to the microwave antenna to maintain the applicator at the predetermined temperature set point.

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