PROBLEM TO BE SOLVED: To provide a hemodialysis apparatus capable of more strictly controlling the amount of removed water and the water removing speed of a patient.SOLUTION: A hemodialysis apparatus 1 has a control unit 15 which executes a dialysis fluid exchange process and a dialysis fluid supply process alternately in a predetermined period of time. In the dialysis fluid exchange process, the control unit 15 activates a first fluid feed pump 82 for supplying a dialysis fluid to a first chamber 30 to cause a partition wall 32 to displace to the side of a second chamber 31, thereby discharging dialysis waste solution from the second chamber 31 to the outside. In the dialysis fluid supply process, the control unit 15 activates a second fluid feed pump 52 to cause the partition wall 32 to displace to the side of the first chamber 30, thereby supplying the dialysis fluid from the first chamber 30 to a dialyzer 10 and discharging the dialysis waste solution from the dialyzer 10 to the second chamber 31. In the dialysis fluid supply process, the control unit 15 also opens a dialysis fluid supply circuit 13 by on-off valves 60, 61 for a predetermined period of time shorter than the processing time for the fluid supply process to cause dialysate drainage to be discharged to the second chamber 31, and upon or after completion of displacement of the partition wall 32 to the side of the first chamber 30, closes the dialysis fluid supply circuit 13 by the on-off valves 60, 61.COPYRIGHT: (C)2015,JPO&INPIT【課題】患者の除水量や除水速度をより厳格に制御できる血液透析装置を提供する。【解決手段】血液透析装置1は、第1の送液ポンプ82を稼働して第1の室30に透析液を供給し、隔壁32が第2の室31側に変位し、第2の室31から外部に透析廃液を排出する透析液交換工程と、第2の送液ポンプ52を稼働し、隔壁32が第1の室30側に変位し、第1の室30から透析器10に透析液を供給し、透析器10から第2の室31に透析廃液を排出する透析液供給工程を、それぞれ予め定められている一定の処理時間で交互に実行し、透析液供給工程において、当該工程の前記処理時間より短い所定時間、開閉弁60、61により透析液供給回路13を開放して第2の室31に透析排液を排出し、隔壁32の第1の室30側への変位が完了した時又はその後、開閉弁60、61により透析液供給回路13を閉鎖する制御部15を有する。【選択図】図1
