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US 5,236,459 AGranted
Bone implant and method of making same
AssigneeSulzer Brothers Limited
InventorsRudolf Koch, Urs Wehrle
Life of this patent
Estimating the term…
Abstract
A bone implant is provided with undercut anchoring areas for bone tissue which extend from the surface of the implant into the interior. Geometrically shaped cavities are generated through the openings in an interconnected manner to provide for the ingrowth of bone tissue. A high pressure liquid jet is used to form the cone-shaped cavities in the implant on spacings to provide for intercommunication between the respective cavities.
Claims3
A method of generating anchoring areas on an implant comprising the steps of
- providing a bone implant body;
- directing a high pressure liquid jet against said bone implant body on an axis perpendicular to a surface of said bone implant body to form an opening in said surface;
- and
- thereafter directing said jet through said opening on an angle relative to said axis while rotating said jet on a circular motion about said axis to form a cavity within the body below said surface.
1 more element
Dependencies are inferred from the claim text.