Fenestrated stent grafts
2 Assignments
0 Petitions
Accused Products
Abstract
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.
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Citations
24 Claims
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1-20. -20. (canceled)
- 21. 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, an internal terminal zig zag self expanding stent in the tubular body at at least the first end, the zig zag stent comprising struts and bends between the struts, at least one scalloped fenestration which is open at one side in the tubular wall provided at the first end of the tubular wall, the at least one scalloped fenestration including a periphery, the periphery extending between a pair of adjacent struts, the adjacent pair of struts being bent away from each other whereby to form a U shaped scallop, the biocompatible graft material being stitched to the bent struts around the periphery of the scalloped fenestration, whereby during deployment the terminal zig zag self expanding stent expanding the bent struts assist with opening up of the scalloped fenestration into the U shape so that a vessel behind the fenestration can be catheterized and the bent struts providing dimensional stability to the scalloped fenestration.
Specification