Electromagnetic medical applicators

Details Electromagnetic medical applicators Electromagnetic medical applicators

1984-02-03

1986-05-20

Cohen, Lee S.

Surgery

Body protecting or restraining devices for patients or infants

Restrainers and immobilizers

343700MS, 343787, A61N 500

Patent

active

045894221

ABSTRACT:
An electromagnetic medical applicator for heating tissue comprises a patch resonator (1) on a substrate (4) of dielectric material backed by a ground-plane (3), and having a layer (7) of dielectric material overlying the resonator inter alia to effect impedance-matching to tissue, in which the substrate includes a volume of magnetic material (5) adjacent the maximum-current region of the resonator in order to reduce the length of the resonator at its resonant frequency.

REFERENCES:
patent: 3811128 (1974-05-01), Munson
patent: 4240445 (1980-12-01), Iskander et al.
Bahl et al., "Microstrip Loop Radiators . . . " Conf: 1981 IEEE MTT S. Int. Microwave Symp. Dig., Los Angeles, Ca., pp. 465-467, Jun. 15-19, 1981.
Bahl et al., "A New Microstrip Radiator . . . " IEEE Trans. on MTT, vol.-MTT-28, No. 12, Dec. 1980, pp. 1464-1468.

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