1979-06-19
1981-05-12
Michell, Robert W.
Surgery
Truss
Pad
356 41, 364416, A61B 500
Patent
active
042665540
ABSTRACT:
A digital oximeter for noninvasively measuring oxygen saturation of the arterial blood is provided. Photoelectric transducers measure the light intensity after passing through living tissue to produce at least a pair of output signals of different wavelengths of light. A sample hold circuit is provided for correspondingly storing each of the respective output signals. A microprocessor controlled pulse activates a subsequent subtraction step between a second measurement taken for each of the respective wavelengths to correspondingly produce at least a first and second subtraction output. The circuit can then process at least the first and second stored light outputs and the first and second subtraction outputs to indicate the oxygen saturation.
REFERENCES:
patent: 3677648 (1972-07-01), Dorsch
patent: 3787124 (1974-01-01), Lowy et al.
patent: 3825342 (1974-07-01), Lubbers et al.
patent: 3847483 (1974-11-01), Shaw et al.
patent: 3948248 (1976-04-01), Zuckerman et al.
patent: 3998550 (1976-12-01), Konishi et al.
patent: 4086915 (1978-05-01), Kofsky et al.
patent: 4095117 (1978-06-01), Nagy
patent: 4167331 (1979-09-01), Nielsen
patent: 4213462 (1980-07-01), Sato
Tait, G. R. et al., "An Analog Computer for Ear Oximetry," Med. & Biol. Engr., vol. 5, pp. 463-472 1967.
Laing, R. A. "The Choroidal Eye Oximeter: An Instrument for Measuring Oxygen Saturation of Choroidal Blood In Vivo," IEEE BME Trans. vol. BME-22, No. 3, May, 1975, pp. 183-195.
Jaworski Francis J.
Michell Robert W.
Minolta Camera Kabushiki Kaisha
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