Blood hematocrit monitoring system

Details Blood hematocrit monitoring system Blood hematocrit monitoring system

1979-01-19

1981-01-06

Lieberman, Eli

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356 40, G01J 100, G01N 3348

Patent

active

042438837

ABSTRACT:
A system for continuously monitoring and/or controlling blood hematocrit levels is disclosed. The system includes a photometric hematocrit sensor which is coupled to a linear response meter, and in one embodiment a separate sensor is coupled to a three-way solenoid valve. The sensor is responsive to the hemoglobin density in the optical path. The valve system automatically causes diversion of solution having a degree of hematocrit dilution below a set minimum. The sensor is independent of the amount of oxy-hemoglobin (HbO.sub.2) and reduced hemoglobin (HHb) and the system allows for instantaneous detection of improper hematocrit levels and obviates the need for time-consuming and unreliable centrifugal micro-hematocrit tests.

REFERENCES:
patent: 2836096 (1958-05-01), Korman
patent: 3029682 (1962-04-01), Wood
patent: 3183908 (1965-05-01), Collins et al.
patent: 3427135 (1969-02-01), Pelavin et al.
patent: 3802776 (1974-04-01), Tchang
patent: 3989625 (1976-11-01), Mason
patent: 4067320 (1978-01-01), Olsson et al.

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