Heart valve prosthesis apparatus

A valve prosthesis apparatus for being implanted into a heart, comprising:

• a valve body, comprising a valve stent and prosthetic leaflets attached to the valve stent;
• a ventricle volume reduction member, fixed to the valve body by a connecting member, the ventricle volume reduction member being arranged by way of forming an isolation cavity for reducing a volume of the ventricle between the ventricle volume reduction member and an inner wall of an apex cordis;
• wherein after the prosthesis apparatus is implanted into the heart, the valve body is released at a native valve annulus for replacing a native valve to play a role in opening or closing a blood flow channel, and the ventricle volume reduction member is released at a left ventricle for improving a left ventricle enlargement caused by a mitral regurgitation.