Output pivot for a magnetic coupling cardiac pump

A pump intended to be immersed in a fluid, the pump comprising an upper part and a lower part when said pump is positioned vertically, the pump also comprising:

• a casing;
• a brushless motor unit at a lower part of the pump formed by:
• a stator in which first magnetic elements are arranged,
• a rotor comprising second magnetic elements intended for magnetic coupling with the first magnetic elements of the stator;
• a transmission shaft connected to the rotor and constituting an impeller in its top part, the impeller being at the upper part of the pump;
• at the upper part of the pump, the impeller comprises at an apex, an outlet pivot suitable for cooperating with a guide fixed to the casing, said guide including a cavity having a shape complementary to that of the outlet pivot so as to hold said pivot stable in rotation and to form a clearance between the outlet pivot and the guide, and in that said guide comprises a central opening via the cavity within the axis of revolution of the outlet pivot for a passage for the fluid from the interior of the casing to the exterior, via the clearance and the opening, and in that the outlet pivot is convex, having a hemispherical, conical or pyramidal shape, and wherein the guide constitutes the outlet of the pump.