Pump for support of the heart

Rotary lobe pump, comprising a pump housing (2, 9, 10) with an essentially cylindrical pump chamber (8) and a rotary lobe arranged concentrically as a rotor (1) with at least two blades (3) arranged opposite one another or evenly distributed in the circumferential direction and at least two sealing valves (4a, 4b), wherein the blades (3) are point-symmetrical to the axis of rotation of the rotor axle tube (18),

• characterized in that
• at least two sealing valves (4a, 4b) arranged opposite one another or evenly distributed in the circumferential direction are provided, the at least two sealing valves (4a, 4b) being rotatable or pivotable and which are curved or sickle-shaped and form the delimitation of the pump chamber and the respective pump chamber section distributed in the circumferential direction, and an inlet duct (11) to at least two inlet openings (6) into the pump chamber (8) and an outlet duct (12) from at least two outlet openings (7) out of the pump chamber (8) being provided axially in a rotor axle tube (18), extending from the opposite axial ends and separated from one another, one of the inlet openings (6) being arranged behind each one of the blades (3) in the rotor axle tube (18) in the direction of rotation (14) and one of the outlet openings (7) being arranged in front of each blade in the direction of rotation (14).