US 12,257,140 B2
Pancreatic stent with drainage feature
Kevin Walsh, Wellesly, MA (US); Gary Trendel, Hopkinton, MA (US); and Paul Mannion, Shrewsbury, MA (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Dec. 17, 2021, as Appl. No. 17/553,974.
Application 17/553,974 is a continuation of application No. 16/706,225, filed on Dec. 6, 2019, granted, now 11,376,111.
Application 16/706,225 is a continuation of application No. 15/819,428, filed on Nov. 21, 2017, granted, now 10,500,035, issued on Dec. 10, 2019.
Application 15/819,428 is a continuation of application No. 14/878,050, filed on Oct. 8, 2015, granted, now 9,839,508, issued on Dec. 12, 2017.
Claims priority of provisional application 62/061,782, filed on Oct. 9, 2014.
Prior Publication US 2022/0104934 A1, Apr. 7, 2022
Int. Cl. A61F 2/04 (2013.01); A61F 2/07 (2013.01); A61F 2/90 (2013.01); A61M 27/00 (2006.01)
CPC A61F 2/04 (2013.01) [A61F 2/07 (2013.01); A61F 2/90 (2013.01); A61M 27/002 (2013.01); A61F 2002/041 (2013.01); A61F 2002/072 (2013.01); A61F 2240/001 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A mandrel for forming an expandable stent structure, comprising:
a plurality of projections extending radially outward defining:
a plurality of first grooves extending helically in a first direction around a circumference of the mandrel, the plurality of first grooves defining a first base; and
a plurality of second grooves extending helically in a second direction around the circumference of the mandrel, the plurality of second grooves defining a second base;
wherein the plurality of projections includes a plurality of taller projections having grooves formed therein defining a raised base that is disposed radially outward from the first base.