Blood constituent measuring device and method

Details Blood constituent measuring device and method Blood constituent measuring device and method

1989-12-15

1990-08-14

Scott, Jr., Leon

Optics: measuring and testing

Blood analysis

Hemoglobin concentration

356 41, 128633, G01N 3348

Patent

active

049482483

ABSTRACT:
A method and device are disclosed for the detection of the relative percentage of at least one light absorber in the blood stream of living tissue. The method and device are based upon the employment of a narrow band width amplifier and pulses of different wavelength light sources wherein the frequency of the pulses of the light sources are selected so that a large component of the signal falls within the frequency of the narrow band amplifier, so that there is reduced likelyhood of interference from extraneous electromagnetic waves.

REFERENCES:
patent: 4350441 (1982-09-01), Wienienski
patent: 4447150 (1984-05-01), Heinemann
patent: 4502786 (1985-03-01), Golias et al.
patent: 4745279 (1988-05-01), Karkar et al.
patent: 4819752 (1989-04-01), Zelin

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