Air-in-line detector infusion system

Details Air-in-line detector infusion system Air-in-line detector infusion system

1987-12-01

1991-04-09

Hindenburg, Max

Surgery

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

Treating material introduced into or removed from body...

604 67, 128DIG12, 128DIG13, A61M 3100

Patent

active

050061100

ABSTRACT:
An air-in-line detection system for use in detecting air bubbles in the fluid line of a disposable cassette mounted on a main pump unit is disclosed which can accurately detect air bubbles in any type of fluid, whether clear or opaque. The system uses an optical module mounted on the main pump unit to supply light and to detect light returned from the cassette, and an optical viewing area in the fluid flow path near the outlet end of the cassette. An inverted prism in the optical viewing path reflects light back to the optical module when air is contained in the fluid flow path adjacent the optical viewing area, with the light not being returned if there are no air bubbles contained in the fluid flow path.

REFERENCES:
patent: 3123066 (1964-03-01), Brumley
patent: 3692410 (1972-09-01), Jurany et al.
patent: 4256437 (1981-03-01), Brown
patent: 4496346 (1985-01-01), Mosteller
patent: 4559454 (1985-12-01), Kramer
patent: 4565500 (1986-01-01), Jeensalute et al.

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