PVD (Physical Vapor Deposition) coatings with TiN and TiNbN present several advantages in surgical instruments and medical devices. This process attributes a high toughness along with a low shear coefficient, giving the instrument a higher cut attribute, a high density, which makes it an excellent barrier to any aggressive chemical environment, and an excellent biocompatibility, presenting a low or inexistent diffusion rate, preventing the appearance of prosthesis material in the surrounding tissues.