Suture-free stent grafts and stent graft constructs with integrated extensions and methods for forming
A suture-free stent graft is disclosed including a woven graft tube having woven extensions extending from an outer face of the woven graft tube. Each of the woven extensions is integrally woven with the woven graft tube such that warp from the woven graft tube is de-interlaced from at a first end and re-interlaced at a second end. Supplemental warp is interlaced into the woven graft tube in replacement of the deinterlaced warp so as to maintain weave density in the woven graft tube under the woven extensions. The woven extensions and portions of the woven graft tube disposed directly under the woven extension have independent weft from one another. A suture-free stent graft construct is disclosed including the suture-free stent graft and at least one stent wire disposed about the suture-free stent graft, at least partially disposed between the woven graft tube and the woven extensions at securement sites.
1 . A suture-free stent graft, comprising:
a woven graft tube having an inner face and an outer face; and
a plurality of woven extensions extending from the outer face of the woven graft tube, wherein:
each of the plurality of woven extensions is integrally woven with the woven graft tube at a first end and a second end such that warp from the woven graft tube is de-interlaced from the woven graft tube at the first end and re-interlaced with the woven graft tube at the second end;
supplemental warp is interlaced into the woven graft tube in replacement of the deinterlaced warp so as to maintain weave density in the woven graft tube under the plurality of woven extensions, and
the plurality of woven extensions and portions of the woven graft tube disposed directly under the plurality of woven extension have independent weft from one another.
2 . The suture-free stent graft of claim 1 , wherein the suture-free stent graft is free of floating yarns forming the plurality of woven extensions.
3 . The suture-free stent graft of claim 1 , wherein each of the plurality of woven extensions has only woven edges except where interlaced and integral with the woven graft tube.
4 . The suture-free stent graft of claim 1 , wherein the plurality of woven extensions include loop extensions integral with the woven graft tube at only the first end and the second end, defining a plurality of through-channels.
5 . The suture-free stent graft of claim 1 , wherein the plurality of woven extensions include slot extensions integral with the woven graft tube at the first end and the second end as well as along one edge extending from the first end to the second end, defining a plurality of pockets.
6 . The suture-free stent graft of claim 1 , wherein the woven graft tube is formed of 20-40 denier yarn and includes at least 150 ends per inch and at least 100 picks per inch throughout the woven graft tube.
7 . The suture-free stent graft of claim 6 , wherein the 20-40 denier yarn is polyethylene terephthalate yarn.
8 . The suture-free stent graft of claim 1 , wherein the plurality of woven extensions are positioned along and about, and oriented relative to, the woven graft tube so as to receive at least one stent wire having a predetermined shape.
9 . A suture-free stent graft construct, comprising:
a suture-free stent graft, comprising:
a woven graft tube having an inner face and an outer face; and
a plurality of woven extensions extending from the outer face of the woven graft tube,
wherein:
each of the plurality of woven extensions is integrally woven with the woven graft tube at a first end and a second end such that warp from the woven graft tube is de-interlaced from the woven graft tube at the first end and re-interlaced with the woven graft tube at the second end;
supplemental warp is interlaced into the woven graft tube in replacement of the deinterlaced warp so as to maintain weave density in the woven graft tube under the plurality of woven extensions, and
the plurality of woven extensions and portions of the woven graft tube disposed directly under the plurality of woven extension have independent weft from one another; and
at least one stent wire disposed about the suture-free stent graft,
wherein the at least one stent wire is at least partially disposed between the woven graft tube and the plurality of woven extensions at a plurality of securement sites, securing the woven graft tube to the at least one stent wire.
10 . The suture-free stent graft construct of claim 9 , wherein the plurality of woven extensions include loop extensions integral with the woven graft tube at only the first end and the second end, defining a plurality of through-channels, and the at least one stent wire passes through the plurality of through-channels.
11 . The suture-free stent graft construct of claim 9 , wherein the plurality of woven extensions include slot extensions integral with the woven graft tube at the first end and the second end as well as along one edge extending from the first end to the second end, defining a plurality of pockets, and the at least one stent wire is partially disposed within the plurality of pockets.