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Systems and methods for determining oxygen saturation

  • US 8,761,855 B2
  • Filed: 10/10/2008
  • Issued: 06/24/2014
  • Est. Priority Date: 07/15/2008
  • Status: Active Grant
First Claim
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1. A method for determining oxygen saturation from photoplethysmographic (PPG) signals, comprising:

  • using a processor for;

    receiving a first PPG signal and a second PPG signal;

    calculating a first oxygen saturation based at least in part on continuous wavelet transforms of the first PPG signal and the second PPG signal;

    calculating a second oxygen saturation based at least in part on spectral transforms of the first PPG signal and the second PPG signal; and

    determining an optimal oxygen saturation based at least in part on the first oxygen saturation and the second oxygen saturation.

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