Injection shut-off valve
AssigneeIntermedicat GmbH
InventorsPaul Zaugg, Werner Kiesinger
Life of this patent
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Abstract
An injection shut-off valve for insertion into an infusion line comprises a housing with connections for inlet and outlet lines. The housing includes an orifice for introducing an injection syringe. A valve is installed in the housing and includes a deformable diaphragm. In a non-injection state, the valve device seals off fluid flow between the inlet and outlet lines on the one hand and the orifice on the other. During injection, the diaphragm is deformed to create an opening such that fluid flow from the inlet to the housing is shut off. During deformation of the diaphragm the orifice is brought into fluid carrying communication with the outlet line from the housing, thus making it possible for the injection fluid to pass through the housing into the outlet line, and to a patient.
Claims7
An injection shut off valve comprising:
- a housing having a fluid inlet line, a fluid outlet line and an elongate orifice body having a bore adapted to receive an end of an injection syringe, the bore being substantially perpendicular to the inlet and outlet lines, and
- a valve device located in the housing, the valve device comprising a cap-shape deformable diaphragm which includes at least one notch, the valve device being comprised of a portion of the housing, the orifice body located in the housing, and the diaphragm which is located between the orifice body and the inlet and outlet lines, the diaphragm being movable between a first non-injection state wherein the inlet and outlet lines are in fluid communication with each other and the bore is sealed from both the inlet and outlet lines, and a second injection state whereby the diaphragm is deformed, deformation of the diaphragm sealing and preventing fluid flow between the fluid inlet line on the one hand and the fluid outlet line and the bore on the other hand, deformation of the diaphragm permitting fluid flow communication between the bore and the fluid outlet line.
Dependencies are inferred from the claim text.