Optical device
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United States of America Patent
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Jan 11, 2005
Grant Date -
N/A
app pub date -
Apr 16, 2001
filing date -
Aug 13, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
There is described a sensor device which comprises light source means for emitting a light beam, photodetector means for receiving the light beam after passing through or being reflected within living tissue and arranged to provide signals corresponding to the intensities of the respective wavelength of light received by the photodetector means characterised in that the sensor device measures blood oxygen saturation. The device can be used in conjunction with a conventional pulse oximeter. There is also described a method of measuring blood oxygen saturation.
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