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Non-invasive infrared absorption spectrometer for measuring glucose or other constituents in a human or other body

  • US 6,025,597 A
  • Filed: 10/23/1997
  • Issued: 02/15/2000
  • Est. Priority Date: 10/17/1995
  • Status: Expired due to Fees
First Claim
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1. A method for noninvasive infrared absorption spectrometry comprising:

  • (a) inducing a temperature gradient in a body such that the temperature is cooler on the surface than internally;

    (b) measuring the intensity and wavelength of infrared energy emanating from within the body by multiple sequential measurements taken at predetermined times;

    the body having a temperature gradient that is warmer inside the body than on a surface of the body;

    (c) utilizing the detected infrared energy for analysis of at least one constituent of the body;

    the utilizing step further including the steps of;

    (c1) quantifying the infrared energy in a band known to be absorbed by the at least one constituent;

    (c2) quantifying the infrared energy in a band known to be not absorbed by the at least one constituent; and

    (c3) calculating the amount of the infrared energy absorbed by the at least one constituent based on the steps (c1) and (c2).

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