Three-way valve for automatic sequencing of fluid flow

Details Three-way valve for automatic sequencing of fluid flow Three-way valve for automatic sequencing of fluid flow

F - Mech Eng,Light,Heat,Weapons

16

K

137/127

F16K 11/00 (2006.01) A61M 39/02 (2006.01)

Patent

CA 1201036

THREE-WAY VALVE FOR AUTOMATIC SEQUENCING OF FLUID FLOW ABSTRACT OF THE INVENTION A three-way valve for automatic sequencing of fluid flow from a syringe into an IV administration set comprises a housing which forms a fluid chamber having a first and a second inlet and an outlet. A sleeve having a fluid passage- way normally closed by a check valve is slidably disposed within the fluid chamber for reciprocal movement between a first position and a second position for respective fluid sealing engagement with the first and second inlets. With the sleeve in the second position, fluid flows through the chamber from the first inlet to the outlet. Engagement of a syringe with the second inlet urges the sleeve into the first position to permit fluid flow from the syringe into the second inlet and through the chamber to the outlet. Upon emptying of the syringe, the syringe plunger seals the second inlet and urges against a probe that opens the check valve to permit resump- tion of fluid flow from the first inlet to the outlet.

472433

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