BLOOD PURIFICATION DEVICE, AND PRIMING METHOD AND OPERATION METHOD OF BLOOD PURIFICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method for suitably performing priming and fluid replacement for the blood purification device using a pump that has a liquid delivery flow rate and flow rate accuracy suited to priming.SOLUTION: A blood purification device 1 includes: a blood purifier 20 that is equipped with a blood purification membrane 30; a blood circuit 10 that sends blood in a blood collection portion 21 to a primary side of the blood purification membrane using a blood pump 40 to return it to a blood return portion 23; a dialysis fluid supply circuit 91 that supplies a dialysis fluid to a secondary side of the blood purification membrane; a dialysis fluid discharge circuit 92 that discharges the dialysis fluid from the secondary side of the blood purification membrane; and a fluid replacement/priming circuit 12. The fluid replacement/priming circuit is configured to perform: a fluid replacement step of supplying the dialysis fluid in the dialysis fluid supply circuit to the blood circuit by a fluid replacement pump 170; and a priming step of using the fluid replacement pump to make the dialysis fluid in the dialysis fluid supply circuit pass through the blood purification membrane and flow out to the primary side, and to discharge the dialysis fluid in the blood circuit including the primary side into the dialysis fluid discharge circuit without passing through the blood purification membrane.