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 graft comprising:
a tube of graft material having a proximal end and a distal end; a plurality of stents attached to the tube of graft material between the proximal and distal ends; a first stent of the plurality of stents, the first stent comprising a plurality of proximal apices and a plurality of distal apices, where each proximal apex comprises a first curved portion and each distal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the proximal apices is greater than the radius of curvature of the distal apices; a second stent of the plurality of stents disposed immediately adjacent and distal of the first stent, the second stent comprising a plurality of distal apices and a plurality of proximal apices, where each distal apex comprises a first curved portion and each proximal apex defines a second curved portion, where in the first curved portion and the second curved portion each comprises a radius of curvature, and the radius of curvature of the distal apices is greater than the radius of curvature of the proximal apices; wherein each distal apex of the first stent substantially abuts a proximal apex of the second stent; and wherein the radius of curvature of the distal apices of the first stent and the radius of curvature of the proximal apices of the second stent is from about 0.5 mm to about 1.5 mm, and wherein the wherein the radius of curvature of the proximal apices of the first stent and the radius of curvature of the distal apices of the second stent is from about 4 mm to about 9 mm.