Absorbable intravascular stents having a therapeutic drug within the scaffold
AssigneeEfemoral Medical, Inc.
InventorsLewis B. Schwartz, Ivan Tzvetanov, Alex Estrada, Eugene Michal
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Abstract
Devices, systems, and methods are provided to maintain or enhance blood flow through the blood vessel as a stent. The balloon-expandable, bioresorbable, vascular stent elements are configured to be implanted in the blood vessel are described herein. The stent element comprises a scaffold and coating layer comprising a bioresorbable structural polymer. A therapeutic drug is provided both on a scaffold coating and integrated within the structural polymer of the scaffold. The method of making the bioresorbable, vascular stent includes an additive manufacturing process described herein.
Claims6
A method of making a bioresorbable, vascular stent, the method comprising:
- forming a balloon-expandable, vascular scaffold from a bioresorbable structural polymer using an additive manufacturing process;
- applying a coating over a surface of the scaffold, wherein the coating comprises a therapeutic drug, a bioresorbable coating polymer configured to provide a matrix for the therapeutic drug on the surface of the scaffold thereby enabling controlled release of the therapeutic drug over time, and a solvent configured to dissolve the therapeutic drug and penetrate the structural polymer thereby inserting the drug within the structural polymer;
- and
- drying the coating to remove the solvent thereby trapping the therapeutic drug within the structural polymer.
Dependencies are inferred from the claim text.