Prosthetic bone material and process for the production of the same
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsAkira Yamamoto, Masanori Nakasu, Yoshie Tominaga
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Abstract
A prosthetic bone material comprising a bonded and sintered product of granules of calcium phosphate compound having a particle size of at least 100 μm, each of the granules being bonded with particulates of calcium phosphate compound having a particle size of about 1 to 40 μm, in which the granules are bonded to each other while retaining their original shape, and their bonding strength is a level sufficient to maintain their own shape when the bonded and sintered product is disintegrated, produced by mixing the granules and the particulates, followed by firing the mixture at a temperature of about 800 to 1,200° C.
Claims12
A prosthetic bone material comprising:
- a bonded and sintered product formed by mixing and bonding unfired granules of calcium phosphate compound having a particle size of at least about 100 μm with particulates of unfired calcium phosphate compound having a particle size of about 1 to 40 μm, said granules being bonded to each other by said particulates, and said granules comprising a size and shape that is maintained or substantially maintained after formation of the bonded and sintered product as well as when the bonded and sintered product is disintegrated.
A process for the production of a prosthetic bone material which comprises:
- mixing unfired granules of calcium phosphate compound having a particle size of at least about 100 μm with unfired particulates of calcium phosphate compound having a particle size of about 1 to 40 μm, and
- firing the mixture at a temperature of about 800 to 1,200° C.
A process for the production of a prosthetic bone material which comprises:
- mixing granules of calcium phosphate compound having a particle size of at least 100 μm with particulates of calcium phosphate compound having a particle size of about 1 to 40 μm,
- adding to the mixture an aqueous solution of at least one of a dispersing agent and a binding agent capable of being dissipated during firing, and, after molding and drying,
- firing the molded and dried product at a temperature of about 800 to 1,200° C.
Dependencies are inferred from the claim text.