Patent ID: 6149588
Filing Date: 2000-11-21
Classification: A61B

Abstract:
A blood sugar value measuring method comprising the steps of exposing a part being measured of a living body to near infrared rays having three wavelengths which are different from one another, but near to one another: detecting the intensities of the near infrared rays of the three wavelengths transmitted through the part being measured:calculating the secondary differential value of the absorbance of the near infrared rays of the part being measured from the intensity detection values of the near infrared rays with respect to the three wavelengths;determining the variation width of the secondary differential value of the absorbance as the difference between the maximum and minimum values of the secondary differential value of the absorbance within a predetermined time; anddetermining the blood sugar value of the living body on the basis of the variation width of the secondary differential value of the absorbance.