Patent ID: 6042564
Filing Date: 2000-03-28
Classification: A61M

Abstract:
A pump system for the sequential administration of two liquids from a pair of containers to a patient, the pump system comprising:a flow set including a pair of valve assemblies each in communication with a container, each valve assembly having three ports communicating through a communication chamber, an inlet port being sealed with a first one-way valve allowing flow of liquid through it only into the chamber, an outlet port being sealed with a second one-way valve allowing flow of liquid through it only out of the chamber, and a pump communication port; a pair of inlet tubing segments each connecting a container to the inlet port of a valve assembly; a connecting tubing segment connecting the pump communicating ports of the two valve assemblies; and an outlet tubing segment connected to the outlet port of each valve assembly for delivery of the liquid to the patient; anda pump having a flow path through which the connecting tubing segment extends, the pump being capable of pumping in both directions.