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Non-invasive analyte measurement device having increased signal to noise ratios

  • US 20040225206A1
  • Filed: 05/09/2003
  • Published: 11/11/2004
  • Est. Priority Date: 05/09/2003
  • Status: Abandoned Application
First Claim
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1. An analyte level measurement device for measuring an analyte level in a body by contacting a skin surface, comprising:

  • an infrared source for emitting an IR beam into an ATR plate, the IR beam having components at least in the region of a referencing wavelength and a measuring wavelength;

    at least two IR sensors for simultaneously measuring absorbance of at least the referencing wavelength and the measuring wavelength; and

    at least one lock-in amplifier in communication with a corresponding IR sensor, the at least one lock-in amplifier being adapted to correlate the infrared source with an output signal from the IR sensors.

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