Gravity infusion and transfusion flow regulating device

Details Gravity infusion and transfusion flow regulating device Gravity infusion and transfusion flow regulating device

1987-05-27

1988-09-06

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604 32, 604248, 604256, 137504, 137852, A61M 5005, F16K 1514

Patent

active

047690127

ABSTRACT:
A flow regulating device for gravity infusion and transfusion of fluids comprises upper and lower housing parts which include inflow and outflow channels respectively. A continuously adjustable valve is connected between the inflow and outflow channels. The outflow channel has an outlet opening which defines a valve seat and a membrane extends across the outlet opening and is movable toward and away from the outlet opening depending on pressure appearing on opposite sides of the membrane. In this way extraneous pressures, such as patient venous pressure, can be compensated for by the membrane to maintain a substantially constant flow of fluid once the valve is set.

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