| 摘要 |
A generally tubular stent-graft has distal and proximal stent-graft ends and includes a generally tubular support element and a covering element. When the stent-graft is unconstrained in a radially-expanded state: the covering and support elements are shaped so as to together define a lateral fenestration having distal and proximal fenestration ends, a perimeter of the distal stent-graft end equals at least 200% of a perimeter of the proximal stent-graft end, and the stent-graft includes a dissection-reinforcement axial portion, which (a) has a proximal dissection-reinforcement end that is disposed no more than 20 mm proximal to the proximal fenestration end, extends along the stent-graft for a distance equal to between 5% and 32% of a greatest perimeter of the stent-graft distally to the distal fenestration end, and (c) has a radial strength that is at least 10% greater than an average radial strength of the entire stent-graft. |
