Method for drug loading hydroxyapatite coated implant surfaces
First Claim
1. A method for loading a hydroxyapatite coated implant with a therapeutic agent, comprising the steps of:
- providing an implant;
applying a hydroxyapatite coating on a surface of the implant;
contacting the hydroxyapatite coated implant with a solution including the therapeutic agent;
heating the hydroxyapatite coated implant and solution to a temperature of about 60°
C. to about 100°
C.; and
applying pressure to the hydroxyapatite coated implant and solution of about 2 bar to about 10 bar to load the hydroxyapatite coated implant with the therapeutic agent for improved therapeutic agent delivery at an implant site.
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Accused Products
Abstract
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.
150 Citations
21 Claims
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1. A method for loading a hydroxyapatite coated implant with a therapeutic agent, comprising the steps of:
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providing an implant; applying a hydroxyapatite coating on a surface of the implant; contacting the hydroxyapatite coated implant with a solution including the therapeutic agent; heating the hydroxyapatite coated implant and solution to a temperature of about 60°
C. to about 100°
C.; andapplying pressure to the hydroxyapatite coated implant and solution of about 2 bar to about 10 bar to load the hydroxyapatite coated implant with the therapeutic agent for improved therapeutic agent delivery at an implant site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for loading a hydroxyapatite coated implant with a therapeutic agent, comprising:
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providing an implant; coating the implant with a metal selected from the group consisting of TiO2, TiO, TiCrO2, Ti2O3, Ti3O5, SiO2, MgO2, AlO2, and CrO2; applying a hydroxyapatite coating on a surface of the implant; thereafter placing the hydroxyapatite coated implant in a solution including the therapeutic agent; heating the hydroxyapatite coated implant and the solution to a temperature of about 60°
C. to about 100°
C.; andapplying pressure to the hydroxyapatite coated implant and solution of about 2 bar to about 10 bar to load the hydroxyapatite coated implant with the therapeutic agent for improved therapeutic agent delivery at an implant site; and thereafter removing the implant from the solution after about 5 minutes. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for loading a hydroxyapatite coated implant with a therapeutic agent, comprising the steps of:
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providing an implant; applying a hydroxyapatite coating on a surface of the implant; contacting the hydroxyapatite coated implant with a solution including the therapeutic agent; heating the hydroxyapatite coated implant and solution to a temperature of about 60°
C. to about 100°
C.; andapplying pressure to the hydroxyapatite coated implant and solution of about 2 bar to about 10 bar to load the hydroxyapatite coated implant with the therapeutic agent for improved therapeutic agent delivery at an implant site; and thereafter removing the implant from the solution after about 5 minutes.
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Specification