Thermal protective circuit for a hyperemia-inducing physiological sensor
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United States of America Patent
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-
Jun 15, 1982
Grant Date -
N/A
app pub date -
Mar 17, 1980
filing date -
Mar 24, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sensor for transcutaneous measurement of physiological phenomena of living tissues is provided with a thermostatically-controlled electric heater. The purpose of the heater is to induce local hyperemia to enable operation of the sensor. The heater is thermostatically controlled. An independent temperature sensor is provided to disable the heater in the event of catastrophic failure of the thermostat circuit.
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