Shunt barrier in pulse oximeter sensor
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United States of America Patent
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Jul 13, 2004
Grant Date -
Nov 21, 2002
app pub date -
Jul 12, 2002
filing date -
Mar 5, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A pulse oximeter sensor having an emitter(s) and a detector, with a layer having a first portion of the emitter and a second portion of layer over the detector is provided. A barrier is included between the first and second portions of the overlying layer to substantially block radiation of the wavelengths emitted by the emitter(s). Preferably, the barrier reduces the radiation shunted to less than 10% of the radiation detected, and more preferably to less than 1% of the radiation detected.
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