Tapered tubular implant formed from woven fabric
AssigneeThe Secant Group, LLC
InventorsSeth A. Winner, Jack Coy
Life of this patent
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Abstract
A tubular woven implantable graft having a tapered section is provided. The graft includes a first diameter and a second diameter and has a generally constant number of warp yarns per inch adjacent both the first diameter and the second diameter. A method for producing an implantable woven graft is also provided. The method includes weaving a first section having a first diameter and a tapered diameter tapering from the first diameter to a second diameter. During weaving of the tapered section a number of warp yarns are dropped from the weave and compressive forces are applied to the fabric to narrow the width of the fabric.
Claims10
An implantable woven graft, comprising:
- a first tubular section wherein the first section comprises a fabric woven from a plurality of base yarns and a plurality of supplemental yarns, wherein
- the first tubular section has a first diameter and a number of warp yarns per inch;
- a frustoconically-shaped hollow tapered section having a first diameter that is substantially the same as the first diameter of the first tubular section and a second diameter, wherein the frustoconically-shaped hollow tapered section comprises a fabric woven from the base yarns forming the first tubular section and a plurality of the supplemental yarns, wherein the plurality of supplemental yarns are dropped from a weave pattern in the frustoconically-shaped hollow tapered section so that ends of the plurality of supplemental yarns protrude from a surface of the frustoconically-shaped hollow tapered section, wherein the protruding supplemental yarns are spaced apart from one another around a circumference of the frustoconically-shaped hollow tapered section,
- wherein the plurality of supplemental yarns are dropped along a single pick line so that ends of the protruding supplemental yarns are spaced apart around the circumference along the pick line, and
- wherein a number of warp yarns per inch at the second diameter is within 20% of a number of warp yarns per inch at the first diameter.
An implantable woven graft, comprising:
- a first tubular section wherein the first section comprises a fabric woven from a plurality of base yarns and a plurality of supplemental yarns, wherein
- the first tubular section has a first diameter and a number of warp yarns per inch;
- a frustoconically-shaped hollow tapered section having a first diameter that is substantially the same as the first diameter of the first tubular section and a second diameter, wherein the frustoconically-shaped hollow tapered section comprises a fabric woven from the base yarns forming the first tubular section and a plurality of the supplemental yarns, wherein the plurality of supplemental yarns are dropped from a weave pattern in the frustoconically-shaped hollow tapered section so that ends of the plurality of supplemental yarns protrude from a surface of the frustoconically-shaped hollow tapered section, wherein the protruding supplemental yarns are spaced apart from one another around a circumference of the frustoconically-shaped hollow tapered section, and
- wherein a number of warp yarns per inch at the second diameter is substantially the same as a number of warp yarns per inch at the first diameter.
Dependencies are inferred from the claim text.