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METHOD AND APPARATUS FOR PROCESSING SIGNALS REFLECTING PHYSIOLOGICAL CHARACTERISTICS

  • US 20070106136A1
  • Filed: 11/08/2005
  • Published: 05/10/2007
  • Est. Priority Date: 11/08/2005
  • Status: Active Grant
First Claim
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1. A device for the monitoring of a physiological characteristic of a patient'"'"'s blood, comprising:

  • a first radiation emitter that emits light at a first wavelength;

    a second radiation emitter that emits light at a second wavelength;

    a radiation detector configured to receive light at said first and second wavelengths after absorbance through the patient'"'"'s blood and provide a first intensity signal and a second intensity signal corresponding to said first and second received wavelengths; and

    a controller for computing said physiological characteristic of said patient'"'"'s blood from a corrected first intensity signal and a corrected second intensity signal determined by applying a residual derived from a combination of said first and second intensity signals as multiplied by a residual factor and subtracted from a difference between said first and second intensity signals to said first and second intensity signals.

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