Magnetic levitation centrifugal pump

1) A magnetic levitation centrifugal pump comprising:

• at least one internally hollow body provided with at least one inlet connector and with at least one outlet connector for blood, where said at least one internally hollow body comprises at least one lower element and at least one upper element which are mutually coupled to each other;
• and
• at least one rotor element housed inside said at least one internally hollow body and provided with at least one portion made of magnetic material, said at least one rotor element being magnetically commanded in rotation about an axis of rotation, without contact, by a stator element associable with said at least one internally hollow body;
• wherein
• said at least one upper element has at least one perimeter flange for coupling and at least one substantially dome-shaped body projecting from said at least one perimeter flange, and
• said at least one outlet connector is associated with said at least one substantially dome-shaped body and is spaced away from said at least one perimeter flange, between said at least one outlet connector and said at one perimeter flange being defined an air space inside which mutual tightening means can be inserted for the tightening of said at least one upper element with said at least one lower element.