| 摘要 |
The operating efficiency of a mass transfer device such as a blood dialyzer is considerably enhanced by subjecting the blood-carrying semipermeable fibers of the dialyzer to a toroidal dialysate flow produced within the fiber cartridge by one or more impeller or pump elements. The impellers may be rotary for continuous flow, or pistons with or without internal check valves may be used for intermittent or reciprocating flow. Moving adjacent impellers in opposite directions creates homogeneous zones of different impurity concentration within the dialyzer.
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