Artificial bone implants
AssigneeBoard of Regents, The University of Texas System
InventorsJoel W. Barlow, Goonhee Lee, Richard H. Crawford, Joseph J. Beaman, Harris L. Marcus, Richard J Lagow
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Abstract
A process for making bone implants from calcium phosphate powders is disclosed. This process involves selectively fusing layers of calcium powders that have been coated or mixed with polymer binders. The calcium powder mixture may be formed into layers and the polymer fused with a laser. Complex three-dimensional geometrical shapes can be automatically replicated or modified using this approach.
Claims11
An artificial bone implant comprising a calcium phosphate composition, wherein the implant
- has a designed complex three-dimensional shape with a well-defined cavity, the cavity having an opening to a surface, the opening having a smaller cross sectional area than the cavity, and
- has a controlled, interconnected porosity.
An artificial bone implant comprising a calcium phosphate composition, wherein the implant
- replicates a naturally complex bone geometry,
- has a complex three-dimensional shape with a well-defined cavity, the cavity replicating internal complex bone geometry, and
- has a controlled, interconnected porosity wherein the calcium phosphate composition has a mole ratio of calcium to phosphorus of 0.5 to 1.
An artificial bone implant comprising layers of a calcium phosphate composition,
- wherein the implant
- replicates a naturally complex bone geometry,
- has a complex three-dimensional shape with a well-defined cavity, the cavity replicating internal complex bone geometry,
- has a controlled, interconnected porosity, and
- wherein the calcium phosphate composition is calcium metaphosphate.
Dependencies are inferred from the claim text.