Method and apparatus for detecting incongruities, such as air bu

Details Method and apparatus for detecting incongruities, such as air bu Method and apparatus for detecting incongruities, such as air bu

1986-08-11

1988-06-21

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 2503561, 250564, G01N 2159, G01N 2185

Patent

active

047526904

ABSTRACT:
Apparatus for detecting contaminants, including emboli, in a blood sample prior to blood cell analysis, wherein fluid density sensors are arranged on opposite sides of a fluid segmenting valve to provide electrical signals indicative of the degree of optical opacity of the fluid flowing through the sensors. The derived signals are compared against a diluent reference level signal to provide resultant signal outputs indicating the presence or absence of emboili or other contaminants within the segmented portion of fluid.

REFERENCES:
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patent: 4152391 (1979-05-01), Cabrera
patent: 4210809 (1980-07-01), Pelavin
patent: 4280495 (1981-07-01), Lampert
patent: 4312341 (1982-01-01), Zissimopoulos et al.
patent: 4344429 (1982-08-01), Gupton et al.
patent: 4366384 (1982-12-01), Jensen
patent: 4371786 (1983-02-01), Kramer
patent: 4418565 (1983-12-01), St. John

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