Parenteral solution pump assembly

Details Parenteral solution pump assembly Parenteral solution pump assembly

1988-03-16

1989-07-11

Garrett, Robert E.

Pumps

Motor driven

Electric or magnetic motor

417479, 604153, 1374544, 137859, 128DIG13, F04B 1700, F04B 3504

Patent

active

048466360

ABSTRACT:
A disposable diaphragm pump cassette comprises a flexible diaphragm member comprising hinged, rigid plates hingingly mounted on an inflexible plate and opposed to a pumping chamber surface to form a pumping chamber. The pump includes check valve means comprising movable circular plates integrally connected with the inflexible plate by flexible, extendable webs. The flexible diaphragm member comprises at least three inflexible diaphragm plates with edges in a common plane, each diaphragm plate having at least two straight diaphragm plate hinge edges. Each diaphragm plate hinge edge is adjacent to and aligned with a second diaphragm plate hinge edge of an adjacent diaphragm plate. The adjacent edges of each diaphragm plate hinge edge and second diaphragm plate hinge edge are attached together by a flexible hinge strip.

REFERENCES:
patent: 2497906 (1950-02-01), Peters et al.
patent: 2758609 (1956-08-01), Dickert et al.
patent: 4152098 (1979-05-01), Moody et al.
patent: 4265600 (1981-05-01), Mandroian
patent: 4303376 (1981-12-01), Siekmann
patent: 4305702 (1981-12-01), Hartley
patent: 4468222 (1984-08-01), Lundquist
patent: 4642098 (1987-02-01), Lundquist

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