Micro-alloyed porous metal having optimized chemical composition and method of manufacturing the same
AssigneeZimmer, Inc.
InventorsJoseph R. Vargas, Steven SEELMAN
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Abstract
A micro-alloyed porous metal is disclosed having an optimized chemical composition to achieve targeted mechanical properties for use as an orthopaedic implant and a cell/soft tissue receptor. The porous metal may achieve a targeted compressive strength and a targeted ductility, for example. These targeted mechanical properties may allow the porous metal to be densified to a low relative density.
Claims20
A method of manufacturing a highly porous biomaterial, the method comprising:
- providing a porous substrate having a plurality of ligaments that define pores of the porous substrate;
- and
- depositing a biocompatible metal coating onto the plurality of ligaments of the porous substrate to provide a highly porous biomaterial, the depositing comprising setting a minimum nitrogen concentration in the metal coating at 488 ppm.
A method of manufacturing a highly porous biomaterial, the method comprising:
- providing a porous substrate having a plurality of ligaments that define pores of the porous substrate;
- and
- depositing a biocompatible metal coating onto the plurality of ligaments of the porous substrate to provide a highly porous biomaterial, the depositing comprising setting at least one of:
- a maximum oxygen concentration in the metal coating at 1,212 ppm, and
- a maximum nitrogen concentration in the metal coating at 1,243 ppm.
A method of manufacturing a highly porous biomaterial, the method comprising:
- providing a porous substrate having a plurality of ligaments that define pores of the porous substrate;
- and
- depositing a biocompatible metal coating onto the plurality of ligaments of the porous substrate to a completed extent to provide a highly porous biomaterial having a relative density less than 18%, the relative density being a percentage obtained by dividing an actual density of the highly porous biomaterial by a theoretical density of the biocompatible metal of the coating.
Dependencies are inferred from the claim text.