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Enhanced optical sensor module

  • US 8,320,981 B1
  • Filed: 06/29/2007
  • Issued: 11/27/2012
  • Est. Priority Date: 06/29/2007
  • Status: Active Grant
First Claim
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1. An implantable system, comprising:

  • a plurality of light sources to transmit toward vascularized tissue, in a time multiplexed manner, light having a first wavelength of approximately 660 nm, light having a second wavelength of approximately 810 nm, light having a third wavelength of approximately 910 nm, and light having a fourth wavelength of approximately 980 nm;

    one or more silicon light detector to detect light of the first, second, third and fourth wavelengths scattered by the vascularized tissue; and

    one or more processor configured todetermine levels of blood oxygen saturation based on the detected scattered light of the first and third wavelengths;

    determine levels of tissue oxygen saturation based on the detected scattered light of the first and third wavelengths;

    determine levels of hemoglobin concentration for tissue based on the detected scattered light of the second wavelength; and

    determine levels of tissue hydration based on the detected scattered light of the fourth wavelength.

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