| 摘要 |
PROBLEM TO BE SOLVED: To improve the dialysis efficiency in a hemodialysis apparatus using a vessel which is capable of strictly controlling the supply volume and discharge volume of a dialysis fluid to the dialyzer.SOLUTION: A hemodialysis apparatus 1 has a control unit 15 which executes a dialysis fluid exchange process and a dialysis fluid supply process alternately to control at least any of a first fluid feed pump 82, a second fluid feed pump 52, on-off valves 83, 84, and on-off valves 60, 61 such that execution time T2 of the dialysis fluid supply process becomes longer than execution time T1 of the dialysis fluid exchange process in one cycle. In the dialysis fluid exchange process, the control unit 15 activates the first fluid feed pump 82 and opens a dialysis fluid exchange circuit 14 by the on-off valves 83, 84 for supplying a dialysis fluid to a first chamber 30 of a vessel 12 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 and opens a dialysis fluid supply circuit 13 by the on-off valves 60, 61 to cause the partition wall 32 to displace to the side of a 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. |
