Device for monitoring cardiovascular signals and fiber optic coupler phonocardio sensor therefor
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United States of America Patent
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-
Dec 24, 1991
Grant Date -
N/A
app pub date -
Dec 4, 1989
filing date -
Dec 4, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Cardiovascular sounds from a patient's body are monitored by placing a fiber optic coupler sensor at an appropriate location on the patient to sense the sounds. The sensor is comprised of all dielectric material having a variable coupler waist region encapsulated in material with index of refraction that varies with applied stress. Stress is induced in the encapsulating material in response to the cardiovascular sounds. Sensor configurations include encapsulating material membranes with curved surfaces to enhance sensitivity.
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