Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1999-02-01
2000-06-27
Ferensic, Denise L.
Fluid handling
Line condition change responsive valves
Direct response valves
137846, 1375123, 222494, 604247, B65D 572, F16K 1514
Patent
active
060794496
ABSTRACT:
A system is provided for contamination free delivery and control of a flowable medium contained in an enclosed flow path or a container. The system is highly scalable in size and works even with viscous fluids which are difficult to flow. The device enables a flowable material to be formulated without anti-oxidants, preservatives or anti microbial agents. This provides the advantage of an enhanced therapeutic effect for many medications, especially those which are considered labile. The device also preserves the integrity and sterility of a flowable material contained in an enclosed flow path such as blood plasma, and is effective against microbial as well as viral challenges. The device can be used to maintain the carbonation of a carbonated flowable medium. The system provides a seat and reversibly deformable seal disposed in the flow path; wherein the seal and seat are moveable between a closed and open state upon the deformation of the seal. In the closed state, the sealing surface between the seal and seat entraps one or more layers of the flowable material which forms a bonding action between the seal and seat to prevent entry of external matter into the flow path while at the same time forming a barrier against the back flow migration of contaminating matter.
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Ferensic Denise L.
Hetherington Michael
Kim Joanne Y.
Waterfall Company, Inc.
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