Eye fundus oximeter Patent #: 4305398
ApplicationNo. 06/216526 filed on 12/15/1980
US Classes:600/323, Oxygen saturation, e.g., oximeter356/41Oximeters
ExaminersPrimary: Howell, Kyle L.
Assistant: Hanley, John C.
Attorney, Agent or Firm
International ClassesA61B 5/00 (20060101)
G01N 21/31 (20060101)
Foreign Application Priority Data1980-01-25 JP
AbstractAn 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.