ANALYSIS METHOD FOR BLOOD COMPONENT DENSITY, DEVICE THEREFOR AND OPTICAL FIBER BUNDLE FOR THE DEVICE

摘要

PROBLEM TO BE SOLVED: To accurately perform the determination of a blood component density non-invasively by performing spectroscopic analysis by using near infrared light selectively transmitted through a cutis part in the surface layer tissue of a living body and performing quantitative analysis by using the correlation of the intra-blood component density and the density in the cutis part of a component for which the determination is a purpose. SOLUTION: The spectroscopy of light from a halogen lamp 1 is performed in a diffraction grating unit 2 housing a diffraction grating, and in a stepping motor unit 3, the rotation angle of the diffraction grating is controlled and a spectroscopic wavelength is adjusted. This optical fiber bundle 4 transmits the light after the spectroscopy to an object to be measured and sends transmission light to a light receiving unit 5 and an arithmetic unit 6 performs the determination of a glucose density based on signals from the light receiving unit 5. An absorption spectrum belonging to a near infrared area is utilized for the glucose density determination and multivariate analysis is executed. The multivariate analysis uses a check base obtained by PLS regression analysis and an analytical curve is obtained by an experiment using an analysis device beforehand.