| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a measuring apparatus for the degree of oxygenation of tissue blood of a living body which enables directly measuring of the degree of oxygenation of blood in a tissue of a living body easily. SOLUTION: This apparatus is provided with measuring light output parts 11-15, 2, 4 and 6 to directly irradiate more than three kinds of measuring lights (a), (b), (c) and (d) as near infrared rays with the wavelength thereof close to each other to a tissue 8 of a living body at a specified intensity and detection parts 5, 7 and 16 to detect the intensity of transmission light or scattered light when the outputted measuring lights (a), (b), (c) and (d) pass through the living body tissue 8. Also provided is a degree of oxygenation computing part 17 which computes the degree of oxygenation as ratio of the number of red corpuscles oxygenated to the total number of red corpuscles in the tissue 8 or the amount of hemoglobin oxygenated to the total amount of hemoglobin based on the amount of light absorbed to all red corpuscles in the tissue 8 of the living being obtained from the intensities of the outputted measuring lights (a), (b), (c) and (d) and the transmission light or the scattered light detected.</p> |
