US Patent 9662425 Method for drug loading hydroxyapatite coated implant surfaces
Patent 9662425 was granted and assigned to Stryker on May, 2017 by the United States Patent and Trademark Office.
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A method for loading a hydroxyapatite coated implant with a therapeutic agent including the steps of providing an implant and applying a hydroxyapatite coating on a surface of the implant. The hydroxyapatite coated implant is contacted with a solution including the therapeutic agent. The hydroxyapatite coated implant and solution is heated to temperature of about 60° C. to about 100° C. Pressure is applied to the hydroxyapatite coated implant and solution from about 2 bar to about 10 bar, to load the hydroxyapatite coated implant with the therapeutic agent. An implant made according to the method has sustained therapeutic agent delivery and includes a base and a biomimetic hydroxyapatite coating disposed on a surface thereof.
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