Textured woven fabric for use in implantable bioprostheses
AssigneeEdwards Lifesciences Corporation
InventorsAjay Chadha, Son V. Nguyen, Kevin D. Rupp
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Abstract
A textured fabric for an implantable bioprosthesis is provided. The textured fabric can include a woven base layer and a plurality of loops projecting from the woven base layer. The plurality of loops are formed from a composite core-sheath yarn. The core can be made of a material that is different from the sheath. The core material can be selected to impart strength and resiliency to bending and the sheath material can be selected to impart a larger surface area or texture that facilitates cellular or tissue in-growth.
Claims71
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer;
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the base layer is a woven base layer comprising warp and weft yarns and wherein the base layer comprises yarns having a diameter of about 20 microns to about 70 microns;
- wherein the composite core-sheath yarn comprises a core that is made from a monofilament yarn or a shape memory metal and a sheath that is made from a textured multifilament yarn;
- wherein the sheath has a diameter of about 25 microns to about 250 microns;
- and
- wherein the textured fabric has a loop density of about 400 loops/in2 to about 1,000 loops/in2.
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer,
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the textured fabric has a loop density of about 400 loops/in2 to about 1,000 loops/in2.
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer,
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the composite core-sheath yarn comprises a core and a sheath that is made from a different material from the core;
- and
- wherein the plurality of loops has a loop height of about 0.0250 inches to about 0.100 inches.
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer,
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the composite core-sheath yarn comprises a core and a sheath that is made from a different material from the core;
- and
- wherein the core-sheath yarn has a TPI of about 20 to about 40.
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer;
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the base layer is a woven base layer comprising warp and weft yarns and wherein the base layer comprises yarns having a diameter of about 20 microns to about 70 microns;
- wherein the composite core-sheath yarn comprises a core that is made from a monofilament yarn or a shape memory metal and a sheath that is made from a textured multifilament yarn;
- wherein the sheath has a diameter of about 25 microns to about 250 microns;
- and
- wherein the plurality of loops has a loop height of about 0.0250 inches to about 0.100 inches.
A textured fabric for a bioprosthesis comprising:
- a base layer;
- and
- a plurality of loops projecting from the base layer;
- wherein the plurality of loops is formed from a composite core-sheath yarn;
- and
- wherein the base layer is a woven base layer comprising warp and weft yarns and wherein the base layer comprises yarns having a diameter of about 20 microns to about 70 microns;
- wherein the composite core-sheath yarn comprises a core that is made from a monofilament yarn or a shape memory metal and a sheath that is made from a textured multifilament yarn;
- wherein the sheath has a diameter of about 25 microns to about 250 microns;
- and
- wherein the core-sheath yarn has a TPI of about 20 to about 40.
Dependencies are inferred from the claim text.