Method of measuring the oxygen saturation in pulsating blood flo

Surgery – Truss – Pad

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356 41, A61B 500

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active

054489911

ABSTRACT:
An improved pulse oximeter for the measurement of oxygen saturation in the blood, which is faster and more accurate than conventional pulse oximeter. Improved speed and accuracy is attached by elimination of normalization and feedback circuitry and the use of analog to digital converting devices having a wide dynamic range along with a sophisticated computer analysis. The instant invention eliminates inaccuracies resulting from channel matching errors, and detects and eliminates aberrant input data.

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"Spectrophotometric monitoring of arterial oxygen saturation in the Fingertip" by I. Yoshiya et al., published by Medical & Biological Engineering & Computing, Jan. 1980.
"An Electronic Circuit for Red/Infrared Oximeters" by E. Schilbli et al., published by IEEE Transactions on Biomedical Engineering, vol. BME 25, No. 1, Jan. 1978.
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Oximet brochure for Oximet pulse Oximeter Model MET-1471, from Mochida.
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Schematics of Biox pulse oximeters models II, IIa, III and IV, from Biox Technology, Boulder, Colo.
Block schematic diagram of Ohmeda 3700 pulse Oximeter.

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