An intravascular blood pump (P) comprises a pumping device (1) including an impeller (6) and an electric motor for driving the impeller (6). A rotor (7) of the electric motor is disposed inside a cavity (22) in the pumping device (1) and rotatable about an axis of rotation and coupled to the impeller (6) so as to be able to cause rotation of the impeller (6). The cavity (22) is formed by an inner sleeve (14) made of a ceramic material. At least a portion of the stator of the electric motor, in particular a coil winding (9), may be arranged on the ceramic inner sleeve (14).