Intravenous-line air-elimination system

Details Intravenous-line air-elimination system Intravenous-line air-elimination system

1995-06-07

1998-02-03

Rimell, Sam

Surgery

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

Treating material introduced into or removed from body...

604123, 604153, A61M 100

Patent

active

057138656

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. At the top end of the line 3 is attached 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 to the separation chamber 1, 2, 12. In a preferred embodiment, the volume of pump's fluid capacity is greater than the volume of the fluid capacity of the intravenous line 31 between the pump 4 and the separation chamber 1, 2, 12, so that the pump can force air back up the intravenous line all the way to the separation chamber.

REFERENCES:
patent: 2835252 (1958-05-01), Mauchel
patent: 3007416 (1961-11-01), Childs
patent: 4391599 (1983-07-01), Jenkins
patent: 4573883 (1986-03-01), Noon
patent: 4634430 (1987-01-01), Polaschegg
patent: 4661097 (1987-04-01), Fischell
patent: 4874359 (1989-10-01), White

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