Implantable helical coil microwave antenna

Details Implantable helical coil microwave antenna Implantable helical coil microwave antenna

1987-06-19

1989-05-02

Cohen, Lee S.

Surgery

Body protecting or restraining devices for patients or infants

Restrainers and immobilizers

128401, 128784, A61N 502

Patent

active

048258806

ABSTRACT:
An implantable helical coil microwave antenna, particularly adapted for interstitial hyperthermia therapy of cancer, comprises a coaxial cable having a distal end of its outer conductor removed and a helical coil mounted on the exposed inner conductor insulator. A proximal end of the helical coil is separated axially from the distal end of the outer conductor and the distal end of the helical coil is connected to the inner conductor of the coaxial cable feed line. The antenna functions to confine heat to the area immediately surrounding the coil and thus induces substantially identical thermal profiles at varying antenna insertion depths in tissue when the antenna is energized with microwave energy.

REFERENCES:
patent: 4154246 (1979-05-01), LeVeen
patent: 4583556 (1986-04-01), Hines et al.
patent: 4658836 (1987-04-01), Turner
patent: 4712559 (1987-12-01), Turner

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