Fluid administration

Details Fluid administration Fluid administration

1996-12-12

1998-09-22

Hindenburg, Max

Surgery

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

Treating material introduced into or removed from body...

604218, A61M 100

Patent

active

058107797

ABSTRACT:
A PCA pump has a fluid reservoir connected via a capillary and a gas vent filter to a cylinder having a piston urged outwardly by a spring to draw fluid into the cylinder. A button can be pressed by the user to press in the piston and dispense fluid. After actuation, the piston moves out to fill the cylinder with fluid and the button is disconnected from the piston until it has moved back to its outer position.

REFERENCES:
patent: 4282867 (1981-08-01), Du Toit
patent: 4411651 (1983-10-01), Schulman
patent: 4828551 (1989-05-01), Gertler et al.
patent: 5378231 (1995-01-01), Johnson et al.
patent: 5383858 (1995-01-01), Reilly et al.

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