Low profile non-symmetrical stent

摘要

A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.

主权项

1. A stent comprising:
a plurality of narrower distal apices defining a first generally circular outer profile, at least one of said distal apices comprising
first and second generally straight portions anda first curved portion disposed between the first and second generally straight portions and comprising a first radius of curvature; and a plurality of broader proximal apices defining a second generally circular outer profile, at least one of said proximal apices comprising
third and fourth generally straight portions anda second curved portion disposed between the third and fourth generally straight portions and comprising a second radius of curvature that is greater than the first radius of curvature, where an outer diameter defined by the broader apices of the second generally circular outer profile is greater than an outer diameter defined by the narrower apices of the first generally circular outer profile; where at least one of the first and second generally straight portions is continuous with at least one of the third and fourth generally straight portions, where the first radius of curvature is from about 0.5 mm to about 1.5 mm, where the second radius of curvature is from about 4 mm to about 9 mm, and where a ratio of the first radius of curvature to the second radius of curvature is about 1:2.6 to about 1:18, and where the stent comprises at least one uncovered region.