| 摘要 |
Provided is a hemodialyzer in which deterioration in membrane performance of a hollow fiber with time can be grasped accurately during dialysis and the performance can be recovered quickly and positively. The hemodialyzer, constituted by connecting an artery side blood circuit ( 2 ) having a blood pump ( 7 ) to the artery side of a dialyzer ( 1 ), connecting a vein side blood circuit ( 3 ) to the vein side of the dialyzer ( 1 ), and connecting a dialysate supply line ( 4 ) and a dialysate discharge line ( 5 ), respectively, to the side face of the dialyzer ( 1 ), is provided with a detector ( 15 ) for determining the pressure in the blood circuit, and a detector ( 16 ) for determining the pressure in the dialysate line, in which transmembrane pressure is calculated based on the determined pressures, and reverse filtering is performed by the dialyzer ( 1 ) when the transmembrane pressure exceeds a predetermined level. Reverse filtering is performed by flushing operation and clogging of pores of the dialyzing membrane in the dialyzer ( 1 ) is eliminated thus recovering performance of the dialyzer ( 1 ).
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