Abstract: An apparatus for producing and/or administering medicines and nutritional solutions to a patient. The apparatus includes a multiway valve having a plurality of inlets, an outlet and a collecting reservoir between the inlets and the outlet. The multiway valve may also have an injection site and connection that can be used both as an inlet and an outlet. The inlets, outlets and injection site each include a one-way valve which allows flow only in the direction from the inlets to the patient. A syringe may be connected to the inlet/outlet connection to draw an amount of solution form one or more of the solution bags and then move the solutions together into a mixing bag connected at the outlet, to prepare a medicine or nutritional solution.

Abstract: A system for the preparation of parenteral nutrient solutions from two or more substrates such as amino acids and carbohydrates in a virtually aseptic environment. A closed system is formed with the substrate supply containers, incorporating conduit extending from each supply container and connected to the inlet of a multiple transfer valve, a dosing syringe secured to the inlet/outlet connection of the transfer valve and a flexible mixing container secured to the outlet of the transfer valve. Each conduit includes a tube clamp such that each conduit is individually communicable with the transfer valve. With the suction stroke of the syringe plunger, fluid is drawn from one of the supply containers into the syringe. As the solution is ejected from the syringe it exits the outlet of the transfer valve and enters the mixing container.