A proposed blood treatment apparatus includes : a blood treatment unit (8), at least one fluid pump (14, 15) and at least one blood pump (1a, 1b). The blood treatment unit (8) is configured to receive untreated blood and fresh blood treatment fluid, and emit treated blood and used blood treatment fluid. The fluid pump(s) (14, 15) is(are) configured to pass blood treatment fluid through the blood treatment unit (8). The blood pump(s) ( 1a, 1b) is(are) configured to extract untreated blood from a blood source (S), pass extracted blood through the blood treatment unit (8) and deliver treated blood to a target vessel (T). Additionally, at least one of the fluid pumps (14, 15) is configured to control the operation of at least one blood pump (1a, 1b) via the blood treatment fluid. Moreover, at least one of the blood pumps (1a, 1b) is integrated into a joint apparatus element (D), which includes the blood treatment unit (8). Thus, this blood pump and the unit (8) may be mounted as well as be discarded jointly.