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Non-invasive blood chemistry measurement by stimulated infrared relaxation emission

  • US 5,370,114 A
  • Filed: 03/12/1992
  • Issued: 12/06/1994
  • Est. Priority Date: 03/12/1992
  • Status: Expired due to Fees
First Claim
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1. A non-invasive, blood chemistry measurement apparatus for measuring a concentration of a selected blood component within a sample of blood, said apparatus comprising:

  • a source of exposing light having a spectral peak at wavenumber k1 that will excite said blood component to a state from which it emits light, by stimulated relaxation emission, having a peak at a second wavenumber k2 different from k1 ;

    means for imaging said exposing light through an area of epidermis of an animal into a portion of that animal'"'"'s blood adjacent to said area of epidermis on which this exposing light is incident;

    means for detecting light that is emitted at wavenumber k2 from molecules of said selected blood component in response to exposing light from said source of light; and

    means, responsive to said means for detecting, for calculating a concentration of said selected blood component.

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