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US 4,084,606 AGranted
Fluid transfer device
AssigneeBaxter Travenol Laboratories, Inc.
InventorHerbert Mittleman
Life of this patent
Estimating the term…
Abstract
A fluid transfer device is provided for administration of medicament to a patient. The device includes a plastic housing having a first inlet, a second inlet and an outlet, and an umbrella check valve coupling the inlets and outlets. The umbrella check valve is positioned so as to permit flow from the first inlet to the second inlet and from the second inlet to the outlet, but to block flow from the second inlet to the first inlet and from the outlet to both the first inlet and the second inlet.
Claims7
A fluid transfer device for the transfer of medical solution which comprises:
- a housing including a first inlet for coupling to the medical solution, a second inlet the axis of which is at an angle with respect to the axis of said first inlet for coupling to pump means, and an outlet;
- said housing defining a first fluid flow path between said first and second inlets;
- said housing defining a second fluid flow path between said second inlet and said outlet;
- an umbrella valve comprising a tubular body portion, a resilient normally closed outlet portion and a resilient umbrella portion;
- said umbrella valve being interposed in both said first and second flow paths;
- said tubular body portion and said resilient outlet portion being located in said second flow path to permit flow under pressure from said second inlet to said outlet but to block flow from said outlet to said first and second inlets, and said resilient umbrella portion being located in said first flow path to permit flow from the first inlet to said second inlet but to block flow from said second inlet to said first inlet;
- means for coupling said second inlet to pump means, said coupling means being constructed to space the pump means from said umbrella portion so that contact between said umbrella portion and the pump means is prevented;
- said housing having an extending member which rests upon said umbrella portion on the side of said umbrella portion that is toward said second inlet.
5 more elements
Dependencies are inferred from the claim text.