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US 10,328,181 B2Granted
Ceramic bone substitute material and method for the production thereof
AssigneesCeramTec GmbH, Fridrich-Alexander-UniversitäT Erlangen-NüRnberg
InventorsHeinrich Wecker, Alfons Kelnberger, Peter Greil, Tobias Fey, Johanna Schmidt, Bodo Zierath
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Abstract
A method for producing a ceramic osseoconductive bone substitute material, the bone substitute material, intervertebral disk implants containing the substitute bone material, and to methods of using the bone substitute material.
Claims13
A method for producing a bone substitute material, including at least one porous ceramic osseoconductive part, comprising the steps of:
- a) providing a foam having a pore density of 30 to 80 ppi;
- b) preparing a ceramic infiltrate suspension that contains a ceramic material selected from the group consisting of an Al2O3-based ceramic material and a ZTA ceramic material;
- c) infiltrating the foam with the ceramic infiltrate suspension;
- d) debinding the ceramic material and burning out the foam;
- and
- e) sintering;
- wherein the sintering comprises the steps of prefiring at a temperature in the range of 1400 to 1500° C., and hot isostatic pressing in an inert gas atmosphere at less than or equal to 1400 bar and a temperature of less than or equal to 1500° C.
4 more elements
Dependencies are inferred from the claim text.