Resorbable bone implant material and method for producing the same
AssigneeCoripharm Medizinprodukte GmbH & Co. KG
InventorsHelmut Wahlig, Elvira Dingeldein, Edgar Wüst, Christoph Sattig
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Abstract
The powdery component of the implant material consists essentially of a mixture of hydroxyl apatite powder and calcium sulfate powder, wherein the hydroxyl apatite powder consists of synthetically prepared, precipitated crystalline nanoparticles of high purity, which have a crystal size of 10-20 nm width and 50-60 nm length. The specific absorbing BET surface area of the nanocrystals is preferably 100-150 m2/g.
Claims26
Resorbable bone implant material prepared from a powdery component containing hydroxyl apatite and from a liquid, wherein the powdery component consists essentially of a mixture of hydroxyl apatite powder and calcium sulfate powder wherein the BET surface area ratio of the mixture of apatite nanoparticles and calcium sulfate particles is approximately 150 m2/g:
- 2 m2/g, and that the hydroxyl apatite powder consists of synthetically produced, precipitated crystalline nanoparticles of high purity, which have a crystal size of 10-20 nm width and 50-60 nm length.
Method for preparing a bone implant material from a powdery component containing hydroxyl apatite with water, wherein the powdery component is prepared by mixing of 85-55 wt. % hydroxyl apatite powder of synthetically produced precipitated nanoparticles of high-purity hydroxyl apatite having a crystal size of 10-20 nm width and 50-60 nm length with 15-45 wt. % calcium sulfate powder in form of a high-purity α-subhydrate with n*H2O (wherein n<1 and approximately 0.5), and the produced powder mixture is prepared with a fraction of 100-200 wt. % sterile water into an initially viscous mass, which subsequently solidifies to form a body.
Dependencies are inferred from the claim text.