The present invention relates to a bone implant device, particularly for dental and orthopedic prosthesis on the vertebral column, having a quicker osteo-integration compared to the prior art devices. Particularly, the present invention relates to an implant device, of metal or polymer nature, a layer of hyaluronic acid being chemically bound on the surface thereof, for use in applications in contact with the bone, with activity of stimulating the bone tissue growth, as well as a process for preparing the same.