SYSTEM AND METHOD FOR OPTIMIZED APHERESIS DRAW AND RETURN

摘要

A blood processing device (10) for collecting and exchanging blood components includes a venous-access device for drawing whole blood from a subject and returning unused blood components to the subject, a blood component separation device (11) that separates the drawn whole blood into a first blood component and a second blood component. The separation device may also send the second blood component to a second blood component storage container (20). The system uses a return line that connects the venous-access device (24) and the blood component separation device to return the first blood component to the subject. The system has a first (M1) and second (M2) pressure sensor located on the return line, the first pressure sensor located between the blood component separation device and the venous-access device and the second pressure sensor located on the return line between the first pressure sensor and the venous-access device. A pump connected to the return line controls the return flow rate according to the measured pressures.