Novel valve employing hydrophobic and hydrophilic membranes

Details Novel valve employing hydrophobic and hydrophilic membranes Novel valve employing hydrophobic and hydrophilic membranes

1979-02-28

1980-09-23

Truluck, Dalton L.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137199, 137183, 55159, 128214R, 128214G, F16T 104, A61M 500

Patent

active

042236959

ABSTRACT:
A novel valve employing hydrophobic and hydrophilic membranes and providing a combined air barrier and liquid sequencing valve. The novel valve is useful in gravitational flow systems and equipment sets for the sequential administration of medical liquids, wherein a primary liquid can be administered at a flow rate independent of the flow rate of a secondary liquid, and includes barriers substantially impervious to air to prevent the inadvertent administration of air when the liquids are depleted.

REFERENCES:
patent: 3886937 (1975-06-01), Bobo et al.
patent: 3993066 (1976-11-01), Virag
patent: 4031891 (1977-06-01), Jess
patent: 4116646 (1978-09-01), Edwards
patent: 4136693 (1979-01-01), Dyke

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