Spectrophotometric blood glucose determination apparatus and determination method thereof

摘要

To provide a portable blood glucose determination apparatus and a determination method for either invasive or non-invasive measurement of glucose concentration in blood by optical observation excelling in measuring accuracy and reproducibility. A spectrophotometric blood glucose determination apparatus is an infra-red quantitative analysis instrument for measuring concentration of glucose in blood, provided with the following units numbered (1) through (3): (1) a near-infrared irradiating unit for continuously dividing wavelengths of near-infrared light in a wavelength range of 0.8 to 2.5 mu m into fine portions with acousto-optic tunable filter and irradiating the subject of measurement therewith; (2) a photoelectric conversion unit for receiving and photoelectrically converting lights transmitted by the subject of measurement irradiated therewith by the near-infrared irradiating unit; and (3) a glucose concentration computing unit for determining the glucose concentration in the blood within the subject of measurement by analyzing an absorbance spectrum obtained on the basis of detection signals resulting from photoelectric conversion by the photoelectric conversion unit, and a spectrophotometric blood glucose determination method including each step using the above described each unit.