Intravenous fluid delivery system with air elimination

Details Intravenous fluid delivery system with air elimination Intravenous fluid delivery system with air elimination

1991-11-15

1993-05-18

Cohan, Alan

Fluid handling

Processes

137183, 604123, A61M 3500

Patent

active

052112012

ABSTRACT:
An air elimination system is provided for an intravenous fluid delivery system for intravenous injection of fluid into a patient. An air-detection apparatus (5) is disposed in an intravenous fluid line (3). A return line (8) is attached to a point in the line (3) below the air-detection apparatus (5). The other end of the return line (8) is attached to a chamber (1, 2, 12) where air may be separated from the fluid. The separation chamber may be a drip chamber (12), a metering chamber (2) or the intravenous supply (1). When air is detected, a valve (11) or valves (7, 9) are switched, so that the intravenous fluid is prevented from flowing to the patient, and so that, when a pump (4) is turned on, the fluid is pumped through the return line (8) to the separation chamber (1, 2, 12).

REFERENCES:
patent: 2252687 (1941-08-01), Bassett
patent: 3042038 (1962-07-01), Beacham
patent: 4661097 (1987-04-01), Fischell
patent: 4734269 (1988-03-01), Clarke
patent: 4764166 (1988-08-01), Spani
patent: 4874359 (1989-10-01), White
patent: 5061241 (1991-10-01), Stephens

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