US 12,083,029 B2
Controlled extension stent
Kimberly DeGraaf, Holden, MA (US); Timothy P. Harrah, Cambridge, MA (US); Mark W. Boden, Harrisville, RI (US); and Jan Seppala, Loretto, MN (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Nov. 29, 2021, as Appl. No. 17/536,834.
Application 17/536,834 is a continuation of application No. 15/802,863, filed on Nov. 3, 2017, granted, now 11,213,414.
Claims priority of provisional application 62/417,484, filed on Nov. 4, 2016.
Prior Publication US 2022/0079785 A1, Mar. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/88 (2006.01); A61F 2/04 (2013.01); A61F 2/91 (2013.01); A61M 27/00 (2006.01); A61B 17/00 (2006.01); A61F 2/95 (2013.01)
CPC A61F 2/91 (2013.01) [A61F 2/042 (2013.01); A61F 2/88 (2013.01); A61F 2/885 (2013.01); A61B 2017/003 (2013.01); A61F 2002/9511 (2013.01); A61M 27/008 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A flexible controlled extension stent configured to allow controlled extension in response to bodily movement when implanted in a body lumen, the stent comprising:
a filament wound into a plurality of coils defining a lumen about a longitudinal axis of the stent along the length of the stent;
wherein:
two or more adjacent coils are in separable contact, and two or more coils are attached together in separable contact;
the stent is expandable along the length thereof, in response to bodily movement, from a longitudinally non-extended state in which the two or more adjacent coils are in substantial contact with one another and the two or more attached coils are attached together, to a first longitudinally extended state in which the two or more adjacent coils separate to no longer be in contact but the two or more attached coils are still attached together, and from the first longitudinally extended state to a second longitudinally extended state in which the two or more adjacent coils are separated from one another and the two or more coils which were attached together in the non-extended state and the first extended state separate to no longer be attached together to accommodate movement of the body lumen in which the flexible controlled extension stent is implanted.