Ratiometric air-in-line detector

Details Ratiometric air-in-line detector Ratiometric air-in-line detector

1987-09-23

1989-08-15

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604122, 128DIG13, 250577, A61M 3100

Patent

active

048570508

ABSTRACT:
An air-in-line detector for use with an IV administration system comprises a light emitter positioned relative to a plurality of light sensors for receiving an IV tube therebetween. A comparator is connected with the light sensors to determine the relative intensity of light respectively incident on each sensor. Means connected with the comparator generates signals in accordance with the relative intensities to indicate whether an IV tube is present and, if so, whether there is fluid or air in the tube.

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Drop Detector, IBM Technical Bulletin, vol. 12, No. 5, Oct. 1969, E. R. Ellenwood.

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