Device for fixing and positioning a cardiac pump

A device, for fixing a cardiac pump in an opening of a ventricular wall of a beating heart, comprising:

• a hollow main body of overall cylindrical shape having an outer surface,
• this hollow main body comprising a proximal end and a distal end between which said outer surface extends, said distal end being intended to protrude from said ventricular wall inside the corresponding ventricular cavity of the beating heart,
• at least one portion of the outer surface of said main body intended to be placed inside said ventricular cavity, except for its distal end, has a surface relief provided with protuberances and hollows and made of a material permitting the adherence and growth of endothelial cells, at least said portion of the outer surface comprising a coating covering a surface of titanium or of titanium alloy, and
• the distal end of said hollow main body forms a smooth crown having an arithmetic average roughness of less than or equal to 1 μm in order to stop the colonization of said fixing device by endothelial cells.