Anti-migration stent

A method of manufacturing an endoprosthesis for implantation within a vessel lumen, comprising:

• forming a tubular scaffold from one or more interwoven filaments defining interstices therebetween, the tubular scaffold having a length;
• applying a polymeric covering to at least a portion of the tubular scaffold;
• positioning the tubular scaffold under a nozzle configured to apply a polymeric bead of material onto the polymeric covering;
• and
• applying the polymeric bead of material onto the polymeric covering previously applied to the tubular scaffold using the nozzle such that the polymeric bead of material forms an anti-migration element extending radially outward from the polymeric covering, wherein the anti-migration element extends helically along at least a portion of the length of the tubular scaffold.

A method of manufacturing an endoprosthesis for implantation within a vessel lumen, comprising:

• forming a tubular scaffold from one or more interwoven filaments defining interstices therebetween, the tubular scaffold having a length;
• applying a polymeric covering to at least a medial region of the tubular scaffold;
• wrapping a wire helically around the tubular scaffold over the polymeric covering;
• securing the wire to uncovered portions of the tubular scaffold;
• and
• thereafter, applying a second polymeric covering over the wire and the uncovered portions of the tubular scaffold.