F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
251/34
F16K 5/00 (2006.01) A61M 5/168 (2006.01)
Patent
CA 1256083
ABSTRACT OF THE DISCLOSURE Both a metering valve and a valve assemblage for controlling the administration of IV fluids having a valve housing with a valving chamber therein are provided herein. The valve includes a housing defining a valving chamber, the housing including an inlet and an outlet connectable to the tubing and placing the chamber in the fluid flow path. A metering member is rotable within the valving chamber, the housing and the metering members being formed of synthetic plastics materials of different hardnesses, as represented by different Shore hardnesses. The valving chamber and the metering member engage in an interference fit as a consequence of the different hardnesses of the synthetic plastics materials. They thus provide a first regime providing a flow passageway in which the cross-sectional area varies over its length; a second regime providing a flow passageway of substantially uniform area over its length for establishing a purge flow condition; and a third regime in which there is no flow passageway and fluid flow is blocked. Means are provided for rotating the metering member relative to the valving chamber to establish one of the regimes, thereby to achieve varying of the flow rate through the flow passageway or the blocking of flow.
485747
Master Medical Corporation
Mcfadden Fincham
LandOfFree
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