Blood processing systems and methods using apparent hematocrit a

Details Blood processing systems and methods using apparent hematocrit a Blood processing systems and methods using apparent hematocrit a

1997-10-30

2000-05-09

Drodge, Joseph W.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210 87, 210145, 2103601, 210787, 494 1, 494 37, 604 4, B01D 17038, B01D 1712

Patent

active

060599790

ABSTRACT:
Blood processing systems and methods separate whole blood into red blood cells and a plasma constituent within a rotating centrifugal separation device. The systems and methods convey whole blood into the separation device through an inlet path including a pump operable at a prescribed rate. The systems and methods remove plasma constituent from the separation device through an outlet path including a pump operable at a prescribed rate. The systems and methods derive a value H.sub.b representing an apparent hematocrit of whole blood entering the separation device, where: ##EQU1## and where H.sub.rbc is a value relating to hematocrit of red blood cells in the separation device. The systems and methods generate outputs and control commands based, at least in part, upon H.sub.b.

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