STENT WITH EASED CORNER FEATURE

摘要

An implantable stent includes a plurality of rings. At least a distal end ring has an eased corner feature formed in the polymer substrate at a radially outward, distal-facing corner of the ring while relatively sharp corners of the polymer substrate are maintained in radially inward corners of the ring.

主权项

1. An implantable stent comprising:
a first ring and a second ring, each of the first ring and the second ring made of a polymer substrate material forming a strut abluminal surface, a strut luminal surface, a distal-facing strut side surface, and a proximal-facing strut side surface, wherein the distal-facing strut side surfaces are normal to and meet strut luminal surfaces to form radially inward corners not dulled or blunted on the first ring and the second ring, a corner feature is formed in the polymer substrate material of the first ring, and the corner feature is located at a radially outward, distal-facing corner of the first ring and, wherein the corner feature blunts or dulls the radially outward, distal facing corner and is defined by a surface between the strut abluminal surface and the distal-facing strut side surface.