A device for coaptation of bone parts or bone fragments, including an integral plate obtained by molding whereof one portion (1) is made from a first biocompatible polymer including at least one or, preferably, a plurality of areas or inserts (2) provided with a through hole (3), the areas or inserts being made from a second biocompatible polymer which is more malleable than the first polymer, the areas or inserts having mechanical properties allowing a self-tapping of the inner surface of the holes, via screws that can be used for securing the plate to bone tissue, the support portion and the areas or inserts having a partial molecular bond between them.