Blood sugar value measuring method and apparatus

Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...

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600322, A61B 500

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active

061495883

ABSTRACT:
Near infrared rays of .lambda.1, .lambda.2, .lambda.3 in wavelength which are different from and near to one another are irradiated from a light source (2) to a part being measured (F) of a living body in such a state that vein bloodstream at the part being measured is stopped by applying a press force of a cuff (8), and the intensities of the transmitted near infrared rays of .lambda., .lambda.2, .lambda.3 in wavelength are detected by a photodetector (4) at the same time. In a processing circuit (14), the absorbance secondary differential value of the near infrared rays by the part being measured (F) is calculated on the basis of the transmitted light intensity detection values thus detected at the same time with respect to the three wavelengths, the variation width thereof within a predetermined time is calculated and then the blood sugar value in the living body is determined from the absorbance secondary differential value variation width on the basis of a calibration curve.

REFERENCES:
patent: 5377674 (1995-01-01), Kuestner
patent: 5499627 (1996-03-01), Steuer et al.
patent: 5676143 (1997-10-01), Simonsen et al.
patent: 5792050 (1998-08-01), Alam et al.

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