Tri-petaled aortic root vascular graft
An implantable, flat-woven multi-petaled graft includes (i) a hollow tubular woven portion having opposed first and second tubular ends, the woven portion having a number of warp yarns interlaced with a number of fill yarns in a flat-woven tubular woven pattern to define a flat-woven tubular diameter, and (ii) a bulbous woven portion having opposed first and second ends, the first bulbous end having a greater number of warp yarns interlaced with the fill yarns in a flat-woven tubular bulbous pattern contiguously woven from the second tubular end to provide a seamless woven, wherein the greater number of warp yarns are threadingly engaged with the fill yarns to define a flat-woven bulbous diameter; wherein the second end of the bulbous portion is scalloped with a plurality of petal-like projections seamlessly woven from the first bulbous end. The graft may include three petal-like projections. The bulbous woven section may be truncated, i.e., hemispherically or hemibulbously shaped.
1. An implantable, flat-woven multi-petaled graft comprising:
a hollow tubular woven portion having opposed first and second tubular ends, said woven portion having a number of warp yarns interlaced with a number of fill yarns in a flat-woven tubular woven pattern to define a seamless tubular woven portion having a flat-woven tubular diameter, and
a bulbous woven portion having opposed first and second ends, the first bulbous end having a greater number of warp yarns interlaced with said fill yarns in a flat-woven tubular bulbous pattern contiguously woven from said second tubular end to provide a seamless bulbous woven portion, wherein the greater number of warp yarns are threadingly engaged with said fill yarns to define a flat-woven bulbous diameter;
wherein said second end of said bulbous portion is scalloped with a plurality of petal-like projections seamlessly woven from said first bulbous end;
wherein the petal-like projections are non-tubular, contoured, lobate-shaped woven sheets having non-connected distal portions.
2. The graft of claim 1 , wherein there are three petal-like projections.
3. The graft of claim 1 , wherein said tubular portion is circumferentially crimped.
4. The graft of claim 1 , wherein said petal-like projections are circumferentially crimped.
5. The graft of claim 1 , wherein said petal-like projections are contoured by threadingly disengaging said additional number of warp yams from said fill yarns.
6. The graft of claim 1 , wherein said second end of said bulbous portion is contoured by threadingly disengaging said additional number of warp yarns from said fill yarns.
7. The graft of claim 1 , further including a mechanical or tissue heart valve, wherein said woven petal-like projections are securably attached to said valve.
8. The graft of claim 1 wherein said petal-like projections are contoured to mimic the shape of the sinuses of Valsalva.
9. The implantable graft of claim 1 , wherein said tubular woven pattern and said bulbous woven pattern are selected from the group consisting a plain weave, a basket weave, a twill weave, a velour weave, a double velour weave, a satin weave, a terry weave, and combinations thereof.
10. The implantable graft of claim 1 , wherein said warp yarns and said fill yarns include materials selected from the consisting of polyester, polypropylene, polyethylene, polyurethane, polytetrafluoroethylene and combinations thereof.
11. The implantable graft of claim 1 , wherein said warp yarns are single ply, 70 denier, 54 filament, twisted fiat polyester; double ply, 40 denier, 27 filament, twisted set polyester; or combinations thereof.
12. The implantable graft of claim 1 , wherein said fill yarns are single ply 70 denier, 54 filament, twisted flat polyester; double ply, 40 denier, 27 filament, twisted set po 1 yester; or combinations thereof.
13. The implantable graft of claim 1 , wherein said bulbous woven section is hemispherically shaped.
14. The graft of claim 1 , wherein said petal-like projections are contoured by threadingly engaging said additional number of warp yarns with said fill yarns.
15. The graft of claim 1 , wherein said petal-like projections have edges that are ravel-resistant.
16. The graft of claim 15 , wherein said edges are woven selvages.
17. The graft of claim 15 , wherein said ravel resistant edges are formed by fusingly sealing said edges.
18. The graft of claim 17 , wherein said edges include heat-fusible yarns.
19. The graft of claim 17 , wherein said edges include an increased yarn density as compared to non-edge portions of said projections.
20. The graft of claim 15 , where said edges are cut from said bulbous second end.
21. The graft of claim 20 , wherein said edges are ultrasonically cut from said bulbous second end.
22. The graft of claim 21 , where in said edges are ultrasonically sealed by fusing yarns disposed at said edges.