05114580 is referenced by 141 patents and cites 12 patents.

A hemodialysis system has a blood circuit and a hemofiltrate circuit interconnected at a hemofilter and an air collection chamber. If an infusion of sterile fluid to the returning blood is needed during the dialysis treatment, filtrate in the filtrate circuit is pumped back into the blood circuit. This is also done to purge the blood circuit of blood and return it to the patient at the conclusiion of a dialysis treatment. A blood pump in the blood circuit incorporates a flexible vessel in conjunction with pinch valves which self expand in a controlled manner from a compressed condition to fill with blood from the patient in a suction stroke controlled by the patient's blood delivery rate. Compression of the vessel by an external member then forces the blood through the rest of the blood circuit.

Title
Combined hemofiltration and hemodialysis system
Application Number
368665
Publication Number
5114580
Application Date
June 20, 1990
Publication Date
May 19, 1992
Inventor
William Jensen
Seattle
WA, US
James J Cole
Arlington
WA, US
Suhail Ahmad
Seattle
WA, US
Agent
Seed and Berry
Assignee
The Board of Regents of the University of Washington
WA, US
IPC
B01D 61/34
B01D 61/32
B01D 61/28
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