Interstitial applicator with cancellation/enhancement gap

Details Interstitial applicator with cancellation/enhancement gap Interstitial applicator with cancellation/enhancement gap

1987-03-23

1989-04-04

Cohen, Lee S.

Surgery

Body protecting or restraining devices for patients or infants

Restrainers and immobilizers

219 1055F, A61N 502

Patent

active

048176354

ABSTRACT:
An interstitial applicator is provided in order to heat a localized region of living tissue by simultaneously enhancing energy passed at the end of a central conductor while cancelling signals traveling along the outside of the application by forming a gap in the outer conductor of a coaxial cable with the gap being located 1/4 wavelength from the end of the outer conductor. The width of the gap corresponds to 1/3 of the diameter of the coaxial cable which forms the applicator. This system provides for an enhancement of the heating at the particular area around the tip of the central conductor while at the same time forms a block to stop surface wave heat from travelling back to the skin/tissue surface.

REFERENCES:
patent: 3230957 (1966-01-01), Seifert
patent: 4612940 (1986-09-01), Kasevich et al.
patent: 4700716 (1987-10-01), Kasevich et al.

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