F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 15/14 (2006.01) A61M 39/24 (2006.01)
Patent
CA 2151135
A miniature valve (10) is provided for use in a medical administration set wherein the valve is designed to be fit into very small areas while operating with performance characterisitics comparable to those provided by larger valves. The valve is formed as a duckbill valve having very thin substantially planar lips (18, 20) extending in converging relationship to each other. A slit (38) is defined by the lips at an outlet end of the valve wherein the slit (38) is movable to an open position as the lips pivot about a pivot point (52, 54) located on the lips in spaced relation to the outlet end. A support structure in the form of a sleeve (40) is provided for ensuring that the contact surfaces remain in alignment with each other during operation of the valve and to prevent the thin, delicate lips (18, 20) from inverting when a large back pressure force is applied and for improving the inherent sealing characteristics of duckbill valves. In addition, a thin area (61) is provided adjacent to the inlet end (22) of the valve for decoupling the lips (18, 20) from forces which are applied to the valve at the inlet end which could tend to bias the lips apart.
Atkinson Gordon E.
Bailey James C.
Kunce James R.
Gowling Lafleur Henderson Llp
Vernay Laboratories Inc.
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