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Method and apparatus for noninvasive measurement of blood glucose by photoacoustics

  • US 6,049,728 A
  • Filed: 11/12/1998
  • Issued: 04/11/2000
  • Est. Priority Date: 11/25/1997
  • Status: Expired due to Term
First Claim
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1. An apparatus for determining a concentration of a component in a subcutaneous bodily fluid, comprising:

  • a source for irradiating a portion of a subcutaneous bodily fluid by heat-diffusion to generate acoustic energy propagating in a medium over a surface of said subcutaneous bodily fluid in response to said irradiation;

    a detector comprising a measuring cell and a reference cell for detecting said acoustic energy and providing an acoustic signal in response to said acoustic energy; and

    a processor for determining a concentration of a component in said subcutaneous bodily fluid in response to said acoustic signal and characteristics of said component.

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