HEMODIALYZER

PROBLEM TO BE SOLVED: To provide a hemodialyzer in which a large variation in returned blood flow is not caused even when both operations for extracting moisture from blood and pushing dialysis liquid into blood are alternately carried out in hemodialysis treatment. SOLUTION: This hemodialysis filter is equipped with a dialyzer to clean blood, a first blood circuit with a blood pump to guide the blood to the hemodialyzer, a second blood circuit to guide the blood to a living body from the hemodialyzer, a dialysis liquid supply circuit with a dialysis liquid supply pump, and a dialysis liquid discharging circuit with a dialysis liquid discharging pump. A by-pass circuit with a supply pump different from the dialysis liquid supply pump is equipped on the setting part of the dialysis liquid supply pump in the dialysis liquid supply circuit. Both the supply pump equipped in the by-pass circuit and the blood pump are normally and reversely rotatable. COPYRIGHT: (C)2004,JPO