BLOOD PURIFICATION DEVICE

摘要

[Problem] To provide a blood purification device, wherein a pair of plunger pumps disposed in a dialysis line can simultaneously deliver fresh dialysis solution and discharge used dialysis solution, and can also remove water and perform back filtration. [Solution] The present invention includes a blood purifier (1), a blood circuit (2), a blood pump (3), and a dialysis line (4) formed from a fresh dialysis solution delivery line (41) and a used dialysis solution discharge line (42). A pair of plunger pumps (51, 52) are disposed in the dialysis line (4). The pair of plunger pumps (51, 52) are synchronized such that fresh dialysis solution is ejected from the plunger pump (51) at the same time that used dialysis solution is suctioned into the plunger pump (52). At least one of the strokes of the pair of plunger pumps (51, 52) is variable.