Hydroxyapatite coatings and a method of their manufacture
AssigneeEtex Corporation
InventorsDusuk Duke Lee, William T. Conner
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Abstract
A process for the production of a hydroxyapatite coated article includes contacting a coating comprising hydroxyapatite with a recrystallization medium, pressurizing the recrystallization medium, heating the coated article under conditions of reduced oxygen activity at a temperature in the range of 100 to 350.degree. C. A process for the production of highly crystalline hydroxyapatite coated articles includes contacting a coating comprising hydroxyapatite with recrystallization medium containing hydroxyapatite particles, pressurizing the recrystallization medium, and heating the immersed coated article under conditions effective to crystallize hydroxyapatite.
Claims29
A process for the production of a hydroxyapatite coated article, comprising the steps of:
- contacting an article, said article having a hydroxyapatite coating, with a recrystallization medium comprised of a liquid;
- pressurizing said recrystallization medium;
- and
- hydrothermally treating the coated article to effect crystallization of said hydroxyapatite coating under conditions of reduced oxygen activity, said reduced oxygen activity being obtained by reducing the oven content of the recapitalization medium or an atmosphere in contact with the recrystallization medium to less than the oxygen content of an aqueous recrystallization medium in equilibrium with atmospheric air.
A process for the production of a hydroxyapatite coated article, comprising the steps of:
- contacting an article, said article having a hydroxyapatite coating, with a recrystallization medium comprised of hydroxyapatite particles and a liquid;
- pressurizing said recrystallization medium;
- and
- hydrothermally treating the coated article to obtain a crystalline hydroxyapatite coating.
A process for the production of a hydroxyapatite coated article, comprising the steps of:
- contacting an article, said article having a hydroxyapatite coating, with a recrystallization medium comprised of hydroxyapatite particles and a mixture of an organic liquid and water;
- pressurizing said recrystallization medium;
- and
- hydrothermally treating the coated article to obtain a crystalline hydroxyapatite coating.
Dependencies are inferred from the claim text.