Roller pump

Roller pump for medical technology, in particular for pumping blood in extracorporeal circulations, the roller pump having a stator with a cylindrical hollow space, the stator including a wall which is formed as a support wall for a pump tube laid along said wall about the central longitudinal axis of the hollow space, rollers rotatably supported on roller supports, the rollers being rollable in a circular path of motion along the tube and pressing said tube together upon rotation of the rotor, the support wall of the pump rotor having an opening defining an inlet region and an outlet region for the tube and in which regions said support wall deviates from the circular path of motion of the pump rollers at a differing curvature along the direction of said circular path of motion, wherein the support wall (3) in the inlet region (10) has a continuously increasing radius of curvature in the direction of motion of the pump rollers (8) and in the outlet region (12) has a continuously decreasing radius of curvature in the direction of motion of the rollers, said radii of curvature (C, D, E) being larger than the radius of curvature in the area of the opening between the inlet and outlet regions.