Light-reflecting and heating type oximeter

Details Light-reflecting and heating type oximeter Light-reflecting and heating type oximeter

1989-05-19

1990-05-22

Wayner, William E.

Surgery

Truss

Pad

128640, 128664, A61B 500

Patent

active

049268678

ABSTRACT:
A light-reflecting and heating type oximeter designed to measure non-invasively oxygen saturation in blood contained in a part of a living body by using an optical sensor. The optical sensor has a light-emitting section for emitting measuring light beams having at least two different wavelengths and a light-receiving section for receiving the measuring light beams activated by and reflected from the measuring part of the living body, and a heating means whose heating temperature is controllable is provided around the light-emitting and -receiving sections. The light receiving section and light emitting section are arranged in a particular positional relationship on a flat surface of the optical sensor housing to obtain accurate measurements. The arrangement enables measurement of oxygen saturation in any part of a living body including those in which blood vessels are distributed close to the body surface, such as finger tips, ears and the flat part of a newborn's foot.

REFERENCES:
patent: 3295515 (1967-01-01), Kahn
patent: 3998550 (1976-12-01), Konishi et al.
patent: 4167331 (1979-09-01), Nielsen
patent: 4259963 (1981-04-01), Huch
patent: 4407290 (1983-10-01), Wilber
patent: 4714080 (1987-12-01), Edgar, Jr. et al.
patent: 4723554 (1988-02-01), Oman et al.
IEEE Transactions on Biomedical Engineering, vol. BME-1, No. 12, Dec. 1984, pp. 792-800, New York, U.S., Mendelson et al., "Noninvasive Transcutaneous Monitoring of Arterial Blood Gases".

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