04446871 is referenced by 120 patents and cites 2 patents.

An optical analyzer such as oximeter is provided including a source of light having a plurality of different wavelengths. At least two or more of the different wavelengths have a fixed relationship of light absorption after coaction with hemoglobin oxide. The light is directed at the subject tissue and received after coaction by an optical probe. A first signal representative of the degree of light absorption at a predetermined standard wavelength is determined and then an attempt is made to match a second wavelength having a fixed relationship of light absorption to the predetermined standard wavelength, e.g., equal absorption, to generate a second signal representative of the second wavelength, whereby the amount of hemoglobin oxide can be determined in the bloodstream.

Title
Optical analyzer for measuring a construction ratio between components in the living tissue
Application Number
6/216526
Publication Number
4446871
Application Date
December 15, 1980
Publication Date
May 8, 1984
Inventor
Kenji Imura
Osaka
JP
Agent
Jackson Jones & Price
Assignee
Minolta Kabushiki Kaisha
JP
IPC
A61B 5/00
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