Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Patent
1997-07-15
1999-06-29
Cohen, Lee
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
607102, 607105, 607113, 607116, 607156, A61N 502
Patent
active
059162406
ABSTRACT:
An intraurethral, Foley-type catheter shaft contains a microwave antenna capable of generating a cylindrically symmetrical thermal pattern, within which temperatures are capable of exceeding 45.degree. C. The antenna, which is positioned within the shaft, is surrounded by means within the shaft for absorbing thermal energy conducted by the tissue and asymmetrically absorbing electromagnetic energy emitted by the antenna--a greater amount of electromagnetic energy being absorbed on one side of the shaft. This asymmetrical absorption alters the thermal pattern generated by the microwave antenna, making it cylindrically asymmetrical, which effectively focuses microwave thermal therapy toward undesirous benign tumorous tissue growth of a prostate anterior and lateral to the urethra, and away from healthy tissue posterior to the urethra.
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Kauphusman James V.
Neilson Bruce H.
Rudie Eric N.
Cohen Lee
Urologix Inc.
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