US 12,109,135 B2
Anti-migration micropatterned stent coating
William Bertolino, Framingham, MA (US); Laura Elizabeth Firstenberg, Boston, MA (US); Claire M. Mcleod, Philadelphia, PA (US); Andrea Lai, Deer Park, IL (US); Sandra Lam, Rancho Palos Verdes, CA (US); and Shannon Taylor, St. Simons Island, GA (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Jan. 19, 2023, as Appl. No. 18/156,699.
Application 18/156,699 is a continuation of application No. 16/738,326, filed on Jan. 9, 2020, granted, now 11,559,413.
Application 16/738,326 is a continuation of application No. 15/355,529, filed on Nov. 18, 2016, granted, now 10,548,708, issued on Feb. 4, 2020.
Application 15/355,529 is a continuation of application No. 14/459,084, filed on Aug. 13, 2014, granted, now 9,526,640, issued on Dec. 27, 2016.
Claims priority of provisional application 61/867,074, filed on Aug. 18, 2013.
Prior Publication US 2023/0149190 A1, May 18, 2023
Int. Cl. A61F 2/90 (2013.01); A61F 2/848 (2013.01); A61F 2/86 (2013.01); A61F 2/91 (2013.01); A61F 2/04 (2013.01); A61F 2/07 (2013.01); B29C 33/42 (2006.01); B29C 39/02 (2006.01); B29C 39/10 (2006.01); B29C 41/14 (2006.01); B29C 41/20 (2006.01); B29C 45/37 (2006.01); B29C 53/58 (2006.01); B29C 65/00 (2006.01); B29C 65/48 (2006.01); B29D 23/00 (2006.01); B29K 101/00 (2006.01); B29L 16/00 (2006.01); B29L 23/00 (2006.01); B29L 31/00 (2006.01)
CPC A61F 2/90 (2013.01) [A61F 2/848 (2013.01); A61F 2/86 (2013.01); A61F 2/91 (2013.01); A61F 2/04 (2013.01); A61F 2002/044 (2013.01); A61F 2/07 (2013.01); A61F 2002/8483 (2013.01); A61F 2002/8486 (2013.01); A61F 2220/0016 (2013.01); A61F 2220/005 (2013.01); A61F 2240/001 (2013.01); A61F 2250/0059 (2013.01); B29C 33/42 (2013.01); B29C 33/424 (2013.01); B29C 39/026 (2013.01); B29C 39/10 (2013.01); B29C 41/14 (2013.01); B29C 41/20 (2013.01); B29C 45/372 (2013.01); B29C 53/587 (2013.01); B29C 65/48 (2013.01); B29C 66/1122 (2013.01); B29C 66/52272 (2013.01); B29C 66/5326 (2013.01); B29C 66/742 (2013.01); B29D 23/00 (2013.01); B29D 23/001 (2013.01); B29K 2101/00 (2013.01); B29L 2016/00 (2013.01); B29L 2023/00 (2013.01); B29L 2031/7532 (2013.01); B29L 2031/7534 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An endoprosthesis comprising:
a stent having an inner surface defining a lumen, an outer surface, wherein the stent defines a plurality of apertures extending between the outer surface and the lumen; and
a polymeric coating attached to the outer surface of the stent and covering at least some of the plurality of apertures, the polymeric coating including a first surface attached to the outer surface of the stent, and a second surface facing outwardly from the stent, wherein a maximum thickness of the polymeric coating is defined between the first and second surfaces, the polymeric coating defining a tissue engagement portion including a plurality of openings in the second surface from which a first plurality of holes extend toward the first surface, the tissue engagement portion defining a second plurality of holes positioned below the second surface and in fluid communication with at least one of the first plurality of holes forming an interconnected network of holes, wherein the maximum thickness of the polymeric coating extends along an outer periphery of the polymeric coating between edges of adjacent openings;
wherein the polymeric coating further comprises a plurality of micropillars extending outwardly from the second surface, away from the first surface;
wherein the first plurality of holes are regularly shaped holes and are configured to allow tissue ingrowth into the second surface of the polymeric coating and the second plurality of holes are configured to allow tissue ingrowth within the tissue engagement portion upon initial implantation of the endoprosthesis in a body lumen.