Valves and valve actuation – With correlated flow path – Valve operated by joining flow path sections
Patent
1993-10-21
1996-12-03
Lee, Kevin
Valves and valve actuation
With correlated flow path
Valve operated by joining flow path sections
604256, 604905, F16L 3728
Patent
active
055800300
ABSTRACT:
A diaphragm fluid flow control assembly serving to provide a leak-proof seal for fluid-containing structures and serving to provide a leak-proof seal while fluid is extracted from the structures via a tube or needle. A perforation in the diaphragm is sealed closed by compressive forces within the diaphragm prior to insertion of a needle through the diaphragm into a fluid containing structure such as an intravenous bag, a syringe or medicament bottle. The diaphragm is also sealed after removal of the needle from the diaphragm. While the needle is inserted through the diaphragm and fluid is extracted from a fluid-containing structure, the diaphragm is in sealing engagement with the external surface of the inserted needle thereby allowing fluid to be removed from the container through the needle and preserving the sterility of the fluid. The assembly serves as a sterilization preserving transmission valve and cap for fluids stored in containers commonly used in the medical and health care field.
REFERENCES:
patent: 4143853 (1979-03-01), Abramson
patent: 4895346 (1990-01-01), Steigerwald
patent: 4946133 (1990-08-01), Johnson et al.
patent: 5221272 (1993-06-01), Proni
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