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Simultaneous measurement of pulse and regional blood oxygen saturation

  • US 8,588,878 B2
  • Filed: 11/12/2010
  • Issued: 11/19/2013
  • Est. Priority Date: 11/12/2009
  • Status: Active Grant
First Claim
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1. A method for calculating blood oxygen saturations, the method comprising:

  • emitting a plurality of light signals from light emitters;

    receiving a first light signal at a first light detector, wherein the received first light signal comprises a first set of impulses corresponding to a first wavelength of emitted light emitted from the light emitters and a second set of impulses corresponding to a second wavelength of light emitted from the light emitters;

    receiving a second light signal at a second light detector;

    calculating a pulse blood oxygen saturation based on a first subset of the first and second sets of impulses of the received first light signal, using a processor, wherein the calculation of pulse blood oxygen saturation is not based on a second subset of the first and second sets of impulses; and

    calculating a regional blood oxygen saturation based on the second subset of the first and second sets of impulses and the received second light signal, using a processor, wherein the calculating a pulse blood oxygen saturation and the calculating a regional blood oxygen saturation are done substantially simultaneously.

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