Patent ID: 8167937

Claim:
An artificial heart, including a pump comprising: a casing internally defining a substantially spherical cavity; a rotating shutter, housed within the substantially spherical cavity and secured thereto so as to be rotatable about an own rotation axis; an oscillating shutter, also housed within the substantially spherical cavity and secured to the rotating shutter 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, secured to the oscillating shutter so as to allow the latter to rotate relative to the same guide ring, wherein the guide ring is arranged to move within a seat formed in the substantially spherical cavity while lying in a plane substantially slanting relative to the rotation axis of the rotating shutter and making thereby the rotating shutter rotate, wherein at least one of the rotating shutter and the oscillating shutter is provided with resilient walls, diaphragms or other means capable of absorbing the pressure peaks and/or limiting the flow rate of fluid being pumped.