The present invention relates to a self-expanding prosthetic valve device and its method of implantation. The valve device comprises: a self-expanding stent, configurable between a collapsed configuration and an expanded configuration; a valve obstructing member comprising a plurality of mechanical leaflets, said valve obstructing member being fixed within the interior of said stent; wherein in the expanded configuration said mechanical leaflets are configured to move between an opened valve state and a closed valve sate.
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