Metal Implant Produced From a Method for Processing a Surface of a Metal Implant

Abstract

A metal implant produced from a method for treating a surface of a metal implant includes a metal layer, an oxide layer formed on a surface of the metal layer, and a macromolecular anti-adhesion layer formed on an outer surface of the oxide layer. The macromolecular anti-adhesion layer is formed of polyethylene glycol.

What is claimed is: 
     
         1 . A metal implant produced from a method for treating a surface of a metal implant, the method for treating the surface of the metal implant comprises:
 polishing a surface of the metal implant to remove an uneven, natural oxide layer on the surface of the metal implant and to generate an even oxide layer on the surface of the metal implant;   electrochemical grafting an anti-adhesion macromolecule which is an organic compound on an outer face of the even oxide layer, with a covalent bond forming between the anti-adhesion macromolecule and oxygen atoms on the outer face of the even oxide layer, creating a macromolecular anti-adhesion layer on the outer face of the even oxide layer; and   changing a property of the surface of the metal implant with the macromolecular anti-adhesion layer by high temperature and high pressure, providing the metal implant with high hydrophilicity,   wherein the metal implant comprises a metal layer having the surface, wherein the even oxide layer is formed on the surface of the metal layer, wherein the even oxide layer has the outer face facing away from the metal layer, and wherein the macromolecular anti-adhesion layer is formed on the outer face of the even oxide layer.   
     
     
         2 . The metal implant as claimed in  claim 1 , wherein the outer face of the even oxide layer having an average roughness of 0.01-0.8 μm. 
     
     
         3 . The metal implant as claimed in  claim 1 , wherein the macromolecular anti-adhesion layer includes polyethylene glycol. 
     
     
         4 . The metal implant as claimed in  claim 1 , wherein the macromolecular anti-adhesion layer has a thickness of 1-50 nm.