US 12,376,955 B2
Endoprosthesis with stress reducing features
Martin Burke, Galway (IE); Daniel Tuck, Galway (IE); Molly Solomon, Lowell, MA (US); and Robert Sears, Maple Grove, MN (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Mar. 17, 2022, as Appl. No. 17/697,551.
Claims priority of provisional application 63/164,766, filed on Mar. 23, 2021.
Prior Publication US 2022/0304795 A1, Sep. 29, 2022
Int. Cl. A61F 2/04 (2013.01); A61F 2/90 (2013.01)
CPC A61F 2/04 (2013.01) [A61F 2/90 (2013.01); A61F 2002/046 (2013.01); A61F 2210/0014 (2013.01); A61F 2250/001 (2013.01); A61F 2250/0073 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An endoprosthesis configured to shift between a collapsed configuration and an expanded configuration, the endoprosthesis comprising:
a tubular scaffold formed from a single filament knitted about a central longitudinal axis and defining a length from a proximal end to a distal end, the tubular scaffold including a plurality of rows of loops and a plurality of rows of rungs arranged around the central longitudinal axis in an alternating fashion; and
a polymeric covering extending along the tubular scaffold;
wherein each row of loops extends longitudinally along the tubular scaffold between the proximal end and the distal end;
wherein each row of rungs extends longitudinally along the tubular scaffold between the proximal end and the distal end;
wherein the tubular scaffold includes:
a first cutout region extending along a majority of the length of the tubular scaffold and defining a first proximal end oriented toward the proximal end of the tubular scaffold and a first distal end oriented toward the distal end of the tubular scaffold; and
a second cutout region extending along a majority of the length of the tubular scaffold and defining a second proximal end oriented toward the proximal end of the tubular scaffold and a second distal end oriented toward the distal end of the tubular scaffold;
wherein the polymeric covering is uninterrupted along the first cutout region and the second cutout region; and
wherein the first cutout region is formed by removing a medial portion of a first row of loops and medial portions of rows of rungs immediately adjacent to the first row of loops along the majority of the length of the tubular scaffold.