Method and system for creating a textured surface on an implantable medical device
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorPaul Reiss
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Abstract
A method for forming an implantable medical device, such as a stent, is provided, in which electric discharges are applied to a metal surface of the implantable medical device. The electric discharges pit the surface. The pitted surface improves retention of a coating on the device and increases the amount of coating that can be carried by the device. An electric discharge machining process is described for applying electric discharges to the surface of the implantable medical device or portion thereof.
Claims14
A method of modifying a stent surface, comprising:
- applying a first charge to a stent;
- and
- applying a second charge to an electrode positioned in close proximity to the stent so that an electric discharge from the electrode produces a pit on a surface of the stent, the pit having an undercut.
The method of 12, wherein the coating includes a drug and/or a polymer.
Dependencies are inferred from the claim text.