Shunt barrier in pulse oximeter sensor
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United States of America Patent
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-
Aug 26, 2008
Grant Date -
Feb 1, 2007
app pub date -
Sep 28, 2006
filing date -
Mar 5, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pulse oximeter sensor comprising an emitter and a detector disposed on a substrate layer with a thinned portion between the emitter and the detector. A partially transparent covering layer covers the substrate layer and comprises a corresponding thinned portion. The thinned portions attenuate light shunted via the substrate layer and the partially transparent covering layer from the emitter to the detector, and may be configured such that less than 10% of the light detectable by the detector is shunted light.
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