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Method of and apparatus for measuring lactic acid in organism

  • US 5,757,002 A
  • Filed: 08/29/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 08/30/1995
  • Status: Expired due to Term
First Claim
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1. A measuring apparatus for lactic acid concentration in an organism comprising:

  • a light source part emitting an input light having a wavelength in a near infrared region wherein said wavelength is a wavelength whose correlation coefficient between said lactic acid concentration and absorbance is at least 0.8 in aqueous lactic acid solution measurement;

    a probe for coming into contact with a tissue measuring portion for irradiating said tissue measuring portion with said input light from said light source part;

    a photoreceiving part for detecting an intensity of an output light being received from said tissue measuring portion; and

    an arithmetic part for calculating a lactic acid concentration on the basis of said intensity of said out put light at one or a plurality of measuring wavelengths, detected by said photoreceiving part, being subjected to absorption.

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