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 and having an internal lumen and an internal wall, terminal self expanding stent portion disposed within the tubular lumen at the first end and abutting at least a portion of the internal wall, the internal terminal self expanding stent portion comprising struts and bends between the struts, only a single U shaped scalloped fenestration which is open at one side in the tubular wall provided at the first end of the tubular wall, the single scalloped fenestration including a periphery, the periphery extending between a pair of struts, the pair of struts at least partially defining the single U shaped scallop fenestration in the biocompatible graft material between the pair of struts, the biocompatible graft material being stitched to the pair of struts at least partially around the periphery of the single U shaped scalloped fenestration, whereby during deployment the bent struts of the internal terminal zig zag self expanding stent assist with opening up of the single U shaped scalloped fenestration into the U shape.