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METHOD FOR ENHANCING PULSE OXIMETRY CALCULATIONS IN THE PRESENCE OF CORRELATED ARTIFACTS

  • US 20140343385A1
  • Filed: 08/04/2014
  • Published: 11/20/2014
  • Est. Priority Date: 03/03/2005
  • Status: Active Grant
First Claim
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1. A medical monitor, comprising:

  • a light drive configured to drive one or more light emitters;

    circuitry configured to receive signals from one or more photodetectors, wherein the signals comprise a correlated artifact;

    a memory storing instructions configured to;

    combine the plurality of received signals to form a plurality of weighted difference waveforms;

    identify a weighted difference waveform from the plurality of weighted difference waveforms that most or least closely resembles a plethysmographic waveform; and

    determine a physiological parameter based at least in part on the identified weighted difference waveform; and

    a processor configured to execute the instructions.

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