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Method and apparatus for monitoring blood constituent levels in biological tissue

  • US 8,204,566 B2
  • Filed: 08/02/2007
  • Issued: 06/19/2012
  • Est. Priority Date: 08/11/2004
  • Status: Active Grant
First Claim
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1. A method of monitoring blood constituent concentration within a biological tissue comprising:

  • providing light having scattering properties sensitive to the blood constituent concentration within the biological tissue;

    directing the light over an area of the biological tissue;

    causing a reflected portion of the light to interfere with a reference beam;

    obtaining interferometric, non-image measurements from at least one tissue depth, the non-image measurements including at least scatter measurements of the light; and

    processing the non-image measurements to determine the blood constituent concentration within the biological tissue.

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