Patent ID: 7108790

Claim:
A system for generating a sterile infusion fluid comprising: a machine for producing non-sterile infusion fluid, the machine having an outflow line for discharging the non-sterile infusion fluid from the machine and a return line for receiving a fluid, the outflow line including an outlet connector and the return line including a return connector; a first conduit having first and second ends with a first connector at the first end for mating with the outlet connector and a second connector at the second end for mating with the return connector, the first conduit having a third connector permitting at least a portion of the non-sterile infusion fluid to be diverted from the first conduit under select conditions, the first conduit further including a first valve disposed between the third connector and the second connector; a second conduit connected at one end to the third connector, the second conduit being connected at an opposite end to a filtration assembly including at least one sterilization filter for sterilizing the diverted non-sterile infusion fluid; and a device for increasing fluid pressure within the first conduit at a location downstream of the first valve so as to cause a fluid pressure increase in the return and outflow lines resulting in at least a portion of the non-sterile infusion fluid being diverted from the first conduit and into the second conduit wherein the first valve comprises a check valve configured to permit fluid flow in a direction from the first end of the first conduit toward the second end of the first conduit.