Surgery – Body protecting or restraining devices for patients or infants – Restrainers and immobilizers
Patent
1989-07-17
1990-10-23
Cohen, Lee S.
Surgery
Body protecting or restraining devices for patients or infants
Restrainers and immobilizers
219 1055F, A61N 502
Patent
active
049644157
ABSTRACT:
Therapeutic deep heating of musculoskeletal tissues is accomplished with an improved transducer that serves simultaneously to couple the power from the generator into the patient and to sense the therapeutic response for treatment control including a method of manufacture and testing of contact applicators for dielectric heating of musculoskeletal tissue. The applicator has a rectangular waveguide in which dielectric material is placed to reduce the guide wave length to the free space value at the frequency of operation. The noninvasive detection of therapeutic response in muscle tissue to dielectric heating is then used to control the treatment. Both heating and sensing are accomplished by one transducer and one apparatus if dielectric heating is employed. If other forms of heating are used, such as ultrasound, the sensor still occurs but the apparatus must be modified, the modifications including replacement of the high power electromagnetic source with a low power source version.
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