Stop-cock valve
First Claim
Patent Images
1. A valve comprising:
- a valve body having at least one inlet port and at least one outlet port;
a valve stem positioned at least partially within said valve body and including a handle, said valve stem including at least one fluid flow passage therethrough, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least one inlet port and said at least one outlet port is prevented, and a second position in which said at least one fluid flow passage connects said at least one inlet port with said at least one outlet port for fluid flow therethrough; and
rotation interference members for substantially inhibiting initial relative rotation between said valve stem and said valve body between said first position and said second position, said rotation interference members including a rigid protrusion extending either from said valve body or said valve stem and a shear-away interference member extending from the other of said valve body or said valve stem, said rigid protrusion and said shear-away interference member being positioned on said valve body and said valve stem such that said shear-away interference member and said rigid protrusion contact each other and interfere with initial rotation of said valve stem relative to said valve body between said first position and said second position,whereby, said shear-away interference member is removed from its attachment with said valve body or said valve stem by said rigid protrusion when rotational force exerted on said valve relative to said valve body to move said valve stem from said first position to said second position exceeds a predetermined value.
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Abstract
The present invention relates to a stop-cock valve useable in conjunction with a fluid delivery set for delivering fluids such as intravenous fluids or enteral fluids from one or more containers to a patient. The valve includes a shear-away interference member which holds the valve in a closed position prior to use in order to prevent accidental premature free flow of fluid therethrough. The valve also includes a venting passage for allowing access of sterilization gas into all fluid flow passages of the valve even when the valve stem is rotated to a closed position.
136 Citations
15 Claims
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1. A valve comprising:
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a valve body having at least one inlet port and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including at least one fluid flow passage therethrough, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least one inlet port and said at least one outlet port is prevented, and a second position in which said at least one fluid flow passage connects said at least one inlet port with said at least one outlet port for fluid flow therethrough; and rotation interference members for substantially inhibiting initial relative rotation between said valve stem and said valve body between said first position and said second position, said rotation interference members including a rigid protrusion extending either from said valve body or said valve stem and a shear-away interference member extending from the other of said valve body or said valve stem, said rigid protrusion and said shear-away interference member being positioned on said valve body and said valve stem such that said shear-away interference member and said rigid protrusion contact each other and interfere with initial rotation of said valve stem relative to said valve body between said first position and said second position, whereby, said shear-away interference member is removed from its attachment with said valve body or said valve stem by said rigid protrusion when rotational force exerted on said valve relative to said valve body to move said valve stem from said first position to said second position exceeds a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A valve comprising:
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a valve body having at least two inlet ports and at least one outlet port; a valve stem positioned at least partially within said valve body and including a handle, said valve stem including a fluid flow passage having a first arm and a second arm which converge into a single fluid flow path, said valve stem being rotatable relative to said valve body between a first position in which fluid flow between said at least two inlet ports and said at least one outlet port is prevented, a second position in which said first arm of said fluid flow passage connects one of said at least two inlet ports with said at least one outlet port for fluid flow therethrough, and a third position in which said second arm of said fluid flow passage connects the other of said at least two inlet ports with said at least one outlet port for fluid flow therethrough; and shoulder members on said valve body and said value stem for preventing relative rotation of said valve stem and said valve body except between said first, second, and third positions, whereby, rotation of said valve stem relative to said valve body to allow fluid flow connection between said one of said at least two inlet ports and said other of said at least two inlet ports is prevented. - View Dependent Claims (13, 14, 15)
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Specification