Microwave hyperthermia applicator
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United States of America Patent
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-
Oct 25, 1994
Grant Date -
N/A
app pub date -
Jun 17, 1991
filing date -
Aug 16, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The antenna system of the invention is insulated on the outside and when inserted in a dissipative medium has a fixed complex resistance. When the antenna is supplied with HF energy through a coaxial cable, only that area of the medium immediately around the antenna is heated. The area surrounding the insulated HF feed line is not heated, or such heating is negligible, since, owing to the fixed complex resistance of the antenna in the medium, any return of energy along the feed line is prevented. The antenna system of the invention is suitable for use in the tumor-therapy field as a hyperthermic microwave applicator for limited local heating of cancerous tissue.
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