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Noninvasive multi-parameter patient monitor

  • US 9,131,882 B2
  • Filed: 10/11/2013
  • Issued: 09/15/2015
  • Est. Priority Date: 03/01/2005
  • Status: Active Grant
First Claim
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1. A method of determining which of a plurality of physiological measurements to measure based on the signal quality of the signal, the method comprising:

  • using a sensor configured to measure at least two different physiological measurements to obtain a signal from a light sensitive detector, the sensor including at least three different light emitters emitting at least three different wavelengths of light through tissue of a living patient and detecting the light after attenuation of the tissue;

    determining a signal quality of the signal;

    driving less than said at least 3 different light emitters to emit light, said driving responsive to the signal quality determination; and

    determining an output value for one of the at least two different measurements responsive to said emitted light.

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