An axial flow pump (10) is presented which includes a housing (1) with aninlet (2) and outlet (3) and a magnetically active rotor (5) in the housingwhich is provided with a passage (6) in the interior and with at least onespiral-shaped vane (7) in the passage, wherein the pitch of the vane (7)varies in the axial direction. The axial flow pump (10) furthermore includesan electromagnetic drive (4, 8) with a stator (8) which is arranged at thehousing and cooperates with a magnetically active rotor.
