An annuloplasty device for plastic surgery of the mitral valve to be implanted in subjects affected by valvular heart diseases causing stenosis and/or insufficiency, including at least one curved body, to be implanted coplanar with the native mitral annulus, characterized in that the curved body has at least two portions extended in different planes with respect to that in which the curved body lies, adapted to assist the heart surgeon in the operations of repair of the mitral apparatus of a patient affected by stenosis and/or insufficiency, the curved body having at least two descending portions to be inserted inside the mitral orifice, adapted to provide a grip for the anchoring of a prolapsed leaflet and/or of a biological tissue biocompatible with the human organism and/or of tendinous elements, when the device is applied to the damaged mitral apparatus of a patient.
