Multi-wavelength physiological monitor
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United States of America Patent
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Mar 11, 2008
Grant Date -
Jan 12, 2006
app pub date -
May 27, 2005
filing date -
Jul 7, 2004
priority date (Note) -
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Abstract
A physiological monitor for determining blood oxygen saturation of a medical patient includes a sensor, a signal processor and a display. The sensor includes at least three light emitting diodes. Each light emitting diode is adapted to emit light of a different wavelength. The sensor also includes a detector, where the detector is adapted to receive light from the three light emitting diodes after being attenuated by tissue. The detector generates an output signal based at least in part upon the received light. The signal processor determines blood oxygen saturation based at least upon the output signal, and the display provides an indication of the blood oxygen saturation.
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