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Valve and Dispenser Assembly for Fluid Disclosure Number: IPCOM000017554D
Original Publication Date: 2001-Apr-01
Included in the Prior Art Database: 2003-Jul-23

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Göran Cewers [+details]


A valve comprises an elastically deformable body, 2, through which there is provided at least one flow channel, 4. A sealing member, 6, is located in each channel, 4, to inhibit the through-flow of fluid until a force is applied to compress the body, 2, sufficient to cause an increase in the cross- sectional area of the flow channel, 4, in the region of the sealing member, 6, thereby permitting the through-flow of fluid. A dispenser assembly, 8, incorporating the valve, 2,4,6, comprises a housing, 10, having an externally accessible chamber,12, in which the valve, 2,4,6, is contained and an externally mountable fluid container, 14, for containing fluid, 16, to be dispensed. The fluid container, 14, is provided with an egress port, 18, and is co-operably arranged with the housing, 10, to establish, when co-located therewith, a fluid tight connection between the egress port, 18, and the at least one flow channel, 4, of the deformable body, 2. Preferably a mechanical contact is established between the container, 14, and the deformable body, 2, when co-located with the housing, 10, and is movable relative to the housing, 10, so as to apply the force to compress the body, 2. In a preferred form of the dispenser assembly, 8, shown in the figure, the elastically deformable body,2, is formed of an elastomeric material having therein or thereon biasing elements, 20, arranged to provide a bias force in opposition to the applied force so as to tend to restore the body, 2, to its original shape. The body, 2, is contained within a housing, 10, which is open at one end, 22, and which connects to a specifically adapted fluid, for example liquid anaesthetic, container , 14, at an opposite end, 24. The deformable body, 2, is located between these opposite ends 22,24, and arranged with its flow channel, 4, along an axis connecting them to provide a fluid flow path through the housing, 10. A rigid support rod, 26 is coaxially arranged with the connecting axis and has the sealing member, 6, fixedly located thereon. One end, 28, of the support rod, 26, is fixedly attached to the housing, 10, and an opposite end, 30, is contactable with a valve, 32, sealing the egress port, 18, and with which it co-operates to un-seal the port, 18, dependent on the relative movement of the container 14, and the rod, 26. A neck section,34, establishes mechanical and fluid connection between the container, 14, and the deformable body, 2, and is movable within the housing, 10, as a suitable force is applied to the container, 14, bringing it closer to the housing, 10. The applied force is thus communicated to the deformable body, 2, thereby causing the desired increase in cross-sectional area. Simultaneously the applied force causes the rod, 26, to be moved against the container valve, 32, opening the egress port to dispensing fluid, 16, from the container, 14, through the flow channel, 4, and to the open end, 22, of the housing, 10. Usefully, the open end, 22, may be connected, even in