FENESTRATED STENT GRAFTS

摘要

A stent graft (1) including a tubular wall (3) with at least one fenestration (40) including a peripheral (37) reinforcement around at least part of the fenestration. There can also be a tubular extension (15). The side arm includes a stent (19) and a cover (17) and extends from and is in fluid communication with the fenestration and the stent graft. The stent may be a self expanding stent. The ring and/or tubular extension provides better support and sealing for an extension arm. The fenestration (40) can be circular or if towards the ends of the stent graft may be in the form of a U-shape (50) with an open end.

主权项

1. A stent graft comprising a tubular body defined by a tubular wall and comprising a first end and a second end, the tubular wall being formed from a biocompatible graft material, a terminal self expanding stent portion at at least the first end of the tubular body, the terminal self expanding stent portion comprising struts and bends between the struts, a three-sided scalloped fenestration provided in the tubular wall at the first end of the tubular body, the three-sided scalloped fenestration including a periphery having first and second substantially longitudinally extending edges and a substantially laterally extending edge between the first and second substantially longitudinally extending edges, the periphery extending between a pair of struts, wherein a length of the substantially laterally extending edge is greater than at least a minimum distance between any two adjacent struts of the stent portion, and where at least a portion of each of the first and second substantially longitudinally extending edges is attached to a strut.