Medical infusion system

Details Medical infusion system Medical infusion system

1978-02-17

1980-04-22

Truluck, Dalton L.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

128214F, 128DIG12, 417478, 417479, 417480, F04B 4308, F04B 4506

Patent

active

041993071

ABSTRACT:
A medical infusion system is described employing a pump for conducting fluid or semi-solids from an upstream portion to a downstream portion of the system. The pump includes conduit means defining, in part, a removable cassette having a window therein and a diaphragm spanning the window. The cassette has inlet and outlet openings valvelessly communicating with the pumping chamber or cavity of the cassette. Fluid in the conduit is pumped by restricting and opening the conduit means at three different locations, one of which is before the cassette and one of which is after the cassette and the third of which is at the diaphragm of the cassette.

REFERENCES:
patent: 2105200 (1938-01-01), Phelps
patent: 2351828 (1944-06-01), Marsh
patent: 2393838 (1946-01-01), Tarbox
patent: 2412397 (1946-12-01), Harper
patent: 2625932 (1953-01-01), Salisbury
patent: 3039399 (1962-06-01), Everett
patent: 3737251 (1973-06-01), Berman et al.
patent: 3778195 (1973-12-01), Bamberg
patent: 4126132 (1978-11-01), Portner et al.

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