Vented vial closure member for freeze-drying which minimizes con

Details Vented vial closure member for freeze-drying which minimizes con Vented vial closure member for freeze-drying which minimizes con

1996-03-01

1998-03-31

Pascua, Jes F.

Bottles and jars

Closures

Receptacle interior communicable with exterior with closure...

215308, B65D 5116

Patent

active

057328374

ABSTRACT:
A closure member for use in closing vials that are subjected to lyophilization conditions is described where the member is a resilient stopper that has a plug movable within a passageway in the stopper. The plug is movable between a first raised venting position and second downwardly engaging, sealing position whereby fluid from the vial or container is precluded from flowing through the fluid passageway in the cap. The passageway has a venting medium filter covering it which allows passage of water vapor, but not bacteria.

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