Fixed volume infusion device

Details Fixed volume infusion device Fixed volume infusion device

1988-11-21

1990-05-01

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 67, A61M 3100

Patent

active

049214802

ABSTRACT:
In a gravity feed intravenous fluid delivery system, a fixed volume metering valve having an upwardly spring biased fluid-measuring piston that is also downwardly pressure biased and is effective to cause the dispensing of a fixed volume of intravenous fluid for each up and down cycle of piston movement, characterized by a cyclically operated clamp on the delivery tube of the system which, when the clamp is closed, allows the spring bias to lift the piston in ascending movement and, when in an open clamp condition, causes the pressure to urge the piston in descending movement, to thereby produce said up and down piston movement which cyclically dispenses the fixed volume of intravenous fluid.

REFERENCES:
patent: 4467844 (1984-08-01), Di Gianfilippo et al.
patent: 4820268 (1989-04-01), Kawamura et al.
patent: 4838856 (1989-06-01), Mulreany et al.
patent: 4838857 (1989-06-01), Strowe et al.

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