Cartridge for drug infusion pump

Details Cartridge for drug infusion pump Cartridge for drug infusion pump

1992-12-23

1994-01-25

Look, Edward K.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

604153, F04B 4308, F04B 4312

Patent

active

052811115

ABSTRACT:
An improved segmented peristaltic cartridge comprising a housing and a cover for assembly in snap-fit relation, said housing and cover defining a pumping chamber having an open segment therein wherein the pumping chamber holds a rotor, a rotor sleeve and a section of flexible tubing looped around the rotor and connected to respective inlet and outlet ports of the cartridge. Mounted on an exterior face of the housing is a safety shield which protects the tubing exposed in the open segment of the cartridge when the cartridge is inserted into a motor pump frame. The cartridge includes free standing walls on the cartridge housing engaging registration surfaces on the cartridge cover, an improved dowel pin structure and peripheral ribs on the rear cover and engaging a rear face of the rotor to minimize friction therebetween.

REFERENCES:
patent: 4559040 (1985-12-01), Morres et al.
patent: 5057081 (1991-10-01), Sunderland
patent: 5181842 (1993-01-01), Sunderland
patent: 5213483 (1993-05-01), Flamerty

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