An implantable device for treating mitral valve regurgitation, the device being configured to expand from a compressed state into an expanded state. The device comprises a stent element consisting of (i) an atrial anchoring stent-portion, and (ii) a valve-carrying stent-portion being fixedly connected with one another, and a valve-element. The atrial anchoring stent-portion has a balloon-like shape and the valve-carrying stent-portion has a cylindrical shape, such, that the valve-carrying stent-portion is positioned intra-annular without contacting the annulus of a native mitral valve.
