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Monitoring of tissue hemoglobin concentration

  • US 8,489,164 B2
  • Filed: 10/27/2010
  • Issued: 07/16/2013
  • Est. Priority Date: 10/27/2010
  • Status: Active Grant
First Claim
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1. A method for monitoring tissue hemoglobin concentration using a medical device having an optical sensor, the method comprising;

  • measuring light attenuation using the optical sensor positioned adjacent to a volume of tissue;

    determining a value of a tissue scattering coefficient corresponding to the tissue volume in response to the attenuation measurement;

    determining a second derivative of the light attenuation measurement;

    computing an artifact correction term in response to the determined tissue scattering coefficient; and

    computing a tissue hemoglobin concentration in response to the artifact correction term and the second derivative.

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