Heart pump with magnetic coupling and reverse flow

An intraventricular heart pump intended to be immersed in a fluid, comprising:

• a fixed housing provided with a top part forming a propulsion chamber propelling fluid towards the top end, and a bottom part forming a stator and attached in a fixed manner to the top part;
• at least one side opening between the top part and the bottom part, and forming an inlet chamber for the fluid to enter from the exterior towards the propulsion chamber;
• a motor unit formed by:
• said stator in which first magnetic elements are arranged;
• a rotor in the form of a bell at least partially covering the stator head and comprising second magnetic elements intended for magnetic coupling with the first magnetic elements of the stator, the bell having at least one opening its top part so as to create a reverse flow of the fluid from the inlet chamber right up to the base of the stator via a passage between the rotor and the stator;
• a transmission shaft comprising at least one connecting arm making it possible to hold the bell above the stator, the axis of the transmission shaft being superposed with the axis of rotation of the bells;
• and
• side vanes arranged between the bell and the transmission shaft and intended to guide the reverse flow in said passage between the rotor and the stator.