Patent ID: 9597206
Date: 2017-03-21
CPC Classifications: A61F,A61L

Claim:
1. An anti-migratory stent comprising: an expandable tubular support structure having an exterior surface, an interior surface, and a plurality of channels extending from the interior surface to the exterior surface; a coating disposed about the exterior surface and extending across the plurality of channels; and a plurality of protrusions extending from an outer surface of the coating, the plurality of protrusions comprising a first set of protrusions adjacent the proximal end and a second set of protrusions adjacent the distal end, each of the first and second set of protrusions having a base and an apex, the apex of each of the first set of protrusions being offset from the base of the first set of protrusions in a direction opposite a direction of offset of the apex of each of the second set of protrusions from the base of the second set of protrusions; wherein the plurality of protrusions are cast formed or molded on the coating.