Pressure-compensated infusion regulator

Details Pressure-compensated infusion regulator Pressure-compensated infusion regulator

1991-09-06

1992-08-11

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 9, 604118, 137501, A61M 500

Patent

active

051375222

ABSTRACT:
A dual-diaphragm, adjustable-rate, pressure-compensated infusion regulator includes a housing having inlet and outlet ports and an intermediate member, and a flexible main diaphragm retained along a peripheral portion thereof in the intermediate member. The regulator further includes a flow-regulating valve consisting of a valve head accessible to a high-pressure source and a valve stem which is attached to the valve head, and a flow-attenuating element of adjustable attenuating effect. A flexible auxiliary diaphragm is retained along a peripheral portion thereof in a high-pressure region and incorporates a valve seat for the valve head, the valve seat and the valve head defining between them a gap through which the liquid passes on its way from the high-pressure source into the inlet chamber.

REFERENCES:
patent: 3782858 (1974-01-01), Deters
patent: 4000740 (1977-01-01), Mittleman
patent: 4343305 (1982-08-01), Bron
patent: 4796660 (1989-01-01), Bron
patent: 4867198 (1989-09-01), Faust
patent: 4904236 (1990-02-01), Redmond et al.
patent: 5009391 (1991-04-01), Steigerwald
patent: 5070905 (1991-12-01), Paradis

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