BLOOD PURIFICATION DEVICE

To provide a blood purification device capable of improving solute removal efficiency in a single needle method.SOLUTION: A blood purification device 100 includes a blood circuit 110, a blood purifier 120, a blood pump 111c, a dialysate circuit 130, a water removal/reverse filtration means 1333, and a control part 140. The control part 140 sets a blood removal amount in a blood removal process to 60-70% of internal volume of the blood purifier 120 and the blood circuit 110, drives the blood pump 111c in a normal rotation direction in the blood removal process, controls the water removal/reverse filtration means 1333 to send the dialysate in the water removal direction, and controls the blood pump 111c and the water removal/reverse filtration means 1333 so that a liquid feed speed of the blood pump 111c is higher than a liquid feed speed of the water removal/reverse filtration means 1333 in the water removal direction, then blood is caused to flow from a vein side line 112 into an artery side line 111 again in a branching part BP.SELECTED DRAWING: Figure 1 【課題】シングルニードル法において、溶質の除去効率を高めることが可能な血液浄化装置を提供すること。【解決手段】血液浄化装置１００は、血液回路１１０と、血液浄化器１２０と、血液ポンプ１１１ｃと、透析液回路１３０と、除水／逆濾過手段１３３３と、制御部１４０と、を備え、制御部１４０は、脱血工程における脱血量を、血液浄化器１２０及び血液回路１１０の内容量に対して６０％～７０％になるように設定し、脱血工程において、血液ポンプ１１１ｃを正回転方向に駆動させると共に、除水／逆濾過手段１３３３を除水方向に透析液を送るように制御し、血液ポンプ１１１ｃの送液速度が除水／逆濾過手段１３３３の除水方向の送液速度よりも速くなるように血液ポンプ１１１ｃ及び除水／逆濾過手段１３３３を制御することで、分岐部ＢＰにおいて血液を静脈側ライン１１２から動脈側ライン１１１に再流入させる。【選択図】図１