Self-supporting woven vascular graft
AssigneeMeadox Medicals, Inc.
InventorPeter J. Schmitt
Life of this patent
Estimating the term…
Abstract
A woven synthetic fabric tubular vascular graft including, a stiffening component in the filling yarn is self supporting without crimping the walls of the graft. The graft is woven from warp ends of multifilament polyester yarns and elastomeric yarns in the warp and a filling yarn which includes multifilament and monofilament polyester yarns which have been twisted together. Longitudinal and radial compliance provide for improved kink resistance making the tubular grafts suitable for use in medium and small diameter peripheral applications. A preferred graft has an outer velour surface and a smooth inner surface.
Claims50
A self-supporting tubular woven synthetic vascular graft, comprising:
- at least one warp yarn and at least one filling yarn woven together to form a weave, and
- said filling yarn including a stiffening component to provide radial burst strength, dimensional stability and radial rigidity sufficient to maintain the lumen of the tubular structure open without crimping;
- and
- wherein said stiffening component is present throughout the length of the weave and is present in each pick of the weave.
A self-supporting tubular woven synthetic vasular graft, comprising:
- a plurality of warp yarns woven with at least one filling yarn to provide a weave;
- and
- wherein said filling yarn comprises a 2-ply yarn, one of said plies comprising a stiffening component which is set in a circumferential condition to provide radial burst strength, dimensional stability and radial rigidity sufficient to maintain the lumen of the tubular structure open and self-supporting without crimping.
The woven vascular graft of claim 37, wherein the vascular graft is a tube with a single outside velour surface and a smooth interior surface, the velour surface formed from warp pile yarns of unshrunk texturized multifilament yarn.
The woven vascular graft of claim 37, wherein the warp pile yarn is 2/40/27 (1.5s) unshrunk texturized polyethylene terephthalate yarn.
A self-supporting tubular single velour woven synthetic vascular graft, comprising:
- a plurality of warp ground yarns including multifilament yarn;
- a plurality of warp pile yarns of multifilament yarn;
- and
- a filling yarn comprising a monofilament yarn wound together with multifilament yarn including a stiffening component woven throughout the weave, the stiffening component to maintain the lumen of the tubular structure open and self-supporting without crimping.
Dependencies are inferred from the claim text.