Title: Metal implant with surface and method for producing the surface
Application Number: 97110532 Application Date: 1997.04.09
Publication Number: 1170561 Publication Date: 1998.01.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A61F2/28;C25F3/14
Applicant(s) Name: Sulzer Orthopadie AG Address:
Inventor(s) Name: R. Baege;J. M. Cassells;T. S. King
Attorney & Agent: WANG ZHAOXIAN
Abstract:
    A surface for a metal implant has a coarse structure of elevations and depressions, with the surface being permeated by a network of protruding ribs which form nodes and interstices or meshes having an interstice width of 2 mm to 0.4 mm, while the depressions represent sections of spherical cavities. The nodes of the ribs can protrude the furthest like mountain peaks, whereas the ribs which connect two nodes each form a lower lying saddle if the spherical cavities penetrate one another slightly. Through coating with an electrochemically resistant protective lacquer, into which holes can be shot at a predetermined spacing without damaging the metal, with a laser for example, a coarsely structured intermediary surface can be economically provided by means of electrochemical erosion which receives a fine structure through sand blasting.
Time: 6