Surgery – Body protecting or restraining devices for patients or infants – Restrainers and immobilizers
Patent
1985-06-17
1986-12-30
Cohen, Lee S.
Surgery
Body protecting or restraining devices for patients or infants
Restrainers and immobilizers
219 1055R, 219 1055F, 374121, A61N 500
Patent
active
046321276
ABSTRACT:
An electromagnetic or microwave hyperthermia method includes an antenna and a noncontacting temperature sensor such as an infrared sensor or a radiometer which together scan a predetermined path over the surface of tissue to be treated. The temperature sensor senses temperature of the tissue, and a controller closes a feedback loop which adjusts the microwave power applied to the antenna in a manner which raises the temperature of the tissue uniformly. An apparatus for accomplishing the method includes an X-Y controller which scans a rectilinear path over the patient or a portion thereof, carrying a loop antenna oriented with its axis normal to the surface to be heated. A noncontacting temperature sensor is carried coaxially aligned with the loop to prevent erroneous temperature indications as the distance of the antenna and temperature sensor assembly from the patient varies. A controllable attenuator is coupled between a microwave generator and the antenna. A controller responsive to the temperature sensor and to a preset temperature adjusts the attenuator in a feedback manner to establish a preselected uniform temperature.
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Cohen Lee S.
Meise William H.
RCA Corporation
Tripoli Joseph S.
Troike Robert L.
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