Recirculation through plural pump cassettes for a solution compounding apparatus
AssigneeAbbott Laboratories
InventorsThomas P. Joyce, John S. Ziegler
Life of this patent
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Abstract
An apparatus and method are disclosed for compounding of parenteral admixture solutions, and recirculation with the admixture solution being formed. The apparatus includes a multiple pump cassette configured for operative association with a pump driver, whereby one or more selected source solutions are delivered through a pump cassette to an associated admixture container. After pumping of each source solution, the present method contemplates that the admixture being formed is recirculated through the pump cassettes thereby diluting any source solution in the cassettes and associated tubing. In this manner, the possible mixture of incompatible source solutions, resulting in formation of precipitate, is desirably avoided.
Claims13
An apparatus for compounding an admixture solution from at least one source solution, comprising:
- first and second pump cassettes, each cassette having a fluid flow path including a plurality of liquid inlets and liquid outlets, the liquid flow path joining said inlets and said outlets in fluid communication, and positive displacement pump means for pumping liquid from a selected one of said inlets through a selected one of said outlets;
- an admixture container for receiving at least one source solution from one of said first and second pump cassettes for forming an admixture solution;
- and
- recirculation means comprising means for joining an outlet of the first cassette with an inlet of the second cassette, and the outlet of the second cassette with the admixture container, and the admixture container with the inlet of the first cassette, whereby said first and second pump cassettes are operable to alternately draw said admixture from said admixture container and into said recirculation means for flow into the inlet and pump liquid from the pump cassettes through said recirculation means for flow into said admixture container.
A method of compounding a liquid admixture using at least two pump cassettes, each pump cassette have a plurality of liquid inlets joined in fluid communication with a liquid outlet through a liquid flow path, and at least two positive displacement pump means for pumping liquid from a selected one of said inlets to said outlet, said method comprising the steps of:
- providing an admixture container;
- providing liquid tubing means for joining said liquid outlet and an upstreammost one of said liquid inlets in fluid communication with said admixture container;
- compounding a liquid admixture in said admixture container by operating each of said at least two pump means to pump at least one source solution from a downstream one of said liquid inlets through said liquid outlet and into said admixture container;
- and
- recirculating said liquid admixture through said at least two pump cassettes.
A fluid pumping apparatus and transfer tubing set for transferring fluids from multiple supply containers to a single receiving container, the pumping apparatus and transfer tubing set comprising:
- two pumping components, each pumping component having a fluid flow path through the component;
- a plurality of fluid ports in each fluid flow path of the two pumping components including a fluid outlet port at one end of the flow path, a flush fluid inlet port at the other end of the flow path, and at least one supply fluid inlet port and a fluid recirculation port positioned between said fluid outlet port and said flush fluid inlet port;
- a plurality of fluid inlet conduits, each inlet conduit connecting one of said multiple supply containers to one of said at least one supply fluid inlet port in each of said two pumping components;
- two fluid outlet conduits, each outlet conduit connected to a fluid outlet port in each of said two pumping components;
- means for fluidly coupling the two fluid outlet conduits immediately upstream of the receiving container;
- a fluid recirculation conduit connecting said fluid recirculation port of one of said two pumping components with the fluid recirculation port of the other of said two pumping components so as to allow fluid flow through the fluid recirculation conduit in selectively alternate directions;
- and
- a final fluid outlet conduit fluidly connecting the coupling means with the receiving container.
Dependencies are inferred from the claim text.