초록 ▼

A system, method and device for continuous mass transfer in fluids, such as blond. A mass transfer device is connected in a closed path between a blood source and a reservoir. Pumps and valves are provided to move the blood through the mass transfer device sequentially in a first path from the blood

A system, method and device for continuous mass transfer in fluids, such as blond. A mass transfer device is connected in a closed path between a blood source and a reservoir. Pumps and valves are provided to move the blood through the mass transfer device sequentially in a first path from the blood source to the reservoir and in a second pass from the reservoir to the blood source. Material may be added to the blood flowing from the source. The mass transfer device may be a fractionating device, In that case the system and method may be used for plasma collection, or for displacement of water preparatory to freezing of the blood, or for the formation of washed blood cells from either whole blood or thawed blood. The system and method may be used for hemodialysis, in which case the mass transfer device is a dialyzer. The fractionating device includes interleaved blood plates and blood fraction collection plates separated by semipermeable membranes. The device is arranged with two separate passages therethrough, each comprising a pair of parallel blood flow channels; the passages being connected in series by external tubing.

대표청구항 ▼

A system for continuously fractionating blood from a blood source in situ, comprising: fractionating means having first and second independent passages therethrough for continuously producing a blood fraction, each of said passages having a blood inlet and a blood outlet and a blood flow channel pro

A system for continuously fractionating blood from a blood source in situ, comprising: fractionating means having first and second independent passages therethrough for continuously producing a blood fraction, each of said passages having a blood inlet and a blood outlet and a blood flow channel providing communication therebetween, said fractionating means having a blood fraction collection channel and a blood fraction outlet communicating therewith, said fractionating means including wall means preventing fluid communication between said blood flow channels internally of said fractionating means, reservoir means, conduit means defining a closed path among the blood source and said fractionating means and said reservoir means, pump means for moving blood along said closed path, valve means coupled in said conduit means and operable between first and second conditions, said valve means in the first condition thereof permitting blood flow from the blood source and into said reservoir means while preventing blood flow from said reservoir means and to the blood source, said valve means in the second condition thereof permitting blood flow from said reservoir means and to the blood source while preventing blood flow from the blood source and to said reservoir means, control means coupled to said valve means for effecting operation thereof between the first and second conditions thereof, said pump means being operable when said valve means is in the first condition thereof for moving blood from the blood source through said first and second blood flow channels and to said reservoir means for continuously producing the blood fraction, said pump means being operable when said valve means is in the second condition thereof for moving blood from said reservoir means through said first and second blood flow channels and to the blood source for continuously producing the blood fraction, and means coupled to said blood fraction outlet for collecting the blood fraction produced.