Earpiece with sensors to measure/monitor multiple physiological variables
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United States of America Patent
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-
Apr 29, 2003
Grant Date -
N/A
app pub date -
Mar 27, 2001
filing date -
Mar 27, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus and method for positioning sensors relative to one another and anatomic features in a non-invasive device for measuring and monitoring multiple physiological variables from a single site uses an earpiece incorporating a shielded pulse oximetry sensor (POS) having a miniaturized set of LEDs and photosensors configured for pulse oximetry measurements in the reflectance mode and located in the earpiece so as to position the POS against a rear wall of an ear canal. The earpiece also includes a thermopile of no larger than 7 mm. in diameter located on the earpiece to so as to position the thermopile past a second turn of an external auditory meatus so as to view the tympanic membrane. The thermopile includes a reference temperature sensor attached to its base for ambient temperature compensation.
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