Process for producing ceramic body for surgical implantation
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United States of America Patent
Stats
-
Dec 2, 1986
Grant Date -
N/A
app pub date -
Mar 27, 1985
filing date -
Mar 28, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing a ceramic body suitable for surgical implantation that has high strength and toughness and good compatibility with bone material. A porous material is provided by semi-sintering a ceramic compact. The pores in the surface of the porous material are filled with a first powder of either tricalcium phosphate or apatite or both, or with a material of the fine powder and a powder of a material substantially the same as the material of the ceramic compact. The porous material is then fired at the sintering temperature of the ceramic compact. Following sintering, the surface of the porous material is coated with a fine apatite powder or a finally pulverized mixture of apatite and a calcium phosphate base frit. The resulting assembly is then fired at a temperature up to about 1,350.degree. C.
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