<p>The heart pump according to the invention includes a casing internally defining a substantially spherical cavity (10) housing: - a rotating shutter (12) secured to the cavity (10) so as to be rotatable about an own rotation axis; - an oscillating shutter (14), secured to the rotating shutter (12) so as to be rotatable relative to the latter about a rotation axis transversal to the rotation axis of the rotating shutter relative to the casing; - a guide ring (18'), secured to the oscillating shutter (14) so as to allow the latter to rotate relative to the same ring (18). The guide ring is arranged to move within a seat formed in the substantially spherical cavity (10) while lying in a substantially slanting plane relative to the rotation axis of the rotating shutter (12) and thereby making the rotating shutter (12) rotate. This allows constructing an artificial heart of very small size that can be driven either by a motor member or by an induced muscle contraction.</p>
