04303376 is referenced by 223 patents and cites 16 patents.

A cassette and controller for accurately controlling fluid flow through an administration set while maintaining a closed fluid system. Inlet and outlet conduits are defined in a body of the cassette and inlet and outlet valves control fluid flow through the respective conduits. A rigid internal cavity of predetermined volume is also defined in the cassette body with an impermeable and flexible diaphragm spanning the cavity. A control conduit communicates with the internal cavity on an opposite side of the diaphragm from the fluid to alternately exert negative and positive pressure on the diaphragm. Negative pressure causes the diaphragm to conform to the shape of the internal cavity when the inlet valve is open to fill the cavity-shaped diaphragm with fluid from the inlet conduit. Positive pressure against the diaphragm expels fluid from the cavity through the outlet conduit when the outlet valve is opened. A controller for the cassette provides the positive and negative pressures and controls the inlet and outlet valves. Related methods of metering the fluid through the cassette are also disclosed.

Title
Flow metering cassette and controller
Application Number
6/55898
Publication Number
4303376
Application Date
July 9, 1979
Publication Date
December 1, 1981
Inventor
Rem Siekmann
Barrington
IL, US
Agent
Eugene M Cummings
John A Caruso
Paul C Flattery
Assignee
Baxter Travenol Laboratories
IL, US
IPC
F04B 43/06
F04B 9/12
A61M 5/00
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