Woven prosthesis and method for manufacturing the same
First Claim
Patent Images
1. An implantable medical prosthesis comprising:
- a woven base comprising base warp yarns interwoven with weft yarn passes, the woven base at least partially forming smaller and larger diameter portions of the prosthesis; and
one or more velour warp yarns forming part of and interwoven with the weft yarn passes in both the smaller and larger diameter portions;
wherein in at least a portion of the larger diameter portion at least one of the one or more velour warp yarns incorporated into the woven base exhibits a weave pattern having the same frequency of interlacing as the woven base, and wherein the prosthesis is seamless.
0 Assignments
0 Petitions
Accused Products
Abstract
A woven prosthesis, such as a woven vascular graft, woven from warp and weft yarns. Velour warp yarns forming the prosthesis are selectively incorporated into a base layer of the prosthesis so as to provide a bulbous section without compromising the porosity of the prosthesis.
248 Citations
19 Claims
-
1. An implantable medical prosthesis comprising:
-
a woven base comprising base warp yarns interwoven with weft yarn passes, the woven base at least partially forming smaller and larger diameter portions of the prosthesis; and one or more velour warp yarns forming part of and interwoven with the weft yarn passes in both the smaller and larger diameter portions; wherein in at least a portion of the larger diameter portion at least one of the one or more velour warp yarns incorporated into the woven base exhibits a weave pattern having the same frequency of interlacing as the woven base, and wherein the prosthesis is seamless. - View Dependent Claims (5, 6, 7, 19)
-
-
2. A method for weaving an implantable substantially tubular medical prosthesis comprising:
-
(i) weaving a woven base comprising base warp yarns interwoven with weft yarn passes, the base at least partially forming smaller and larger diameter portions of the prosthesis, one or more velour warp yarns forming part of and interwoven with the weft yarn passes in both the smaller and larger diameter portions; and (ii) incorporating in at least a portion of the larger diameter portion at least one of the one or more velour warp yarns into the woven base so as to exhibit a weave pattern having the same frequency of interlacing as the woven base. - View Dependent Claims (3, 4, 8)
-
-
9. An implantable medical prosthesis comprising:
-
a woven base comprising base warp yarns interwoven with weft yarn passes, at least a portion of the warp yarns of the woven base are woven to have a first frequency of interlacing, the woven base at least partially forming smaller and larger diameter portions of the prosthesis; and one or more velour yarns forming part of both the smaller and larger diameter portions and interwoven with the weft yarn passes to have a second frequency of interlacing that is smaller than the first frequency of interlacing; wherein in at least a portion of the larger diameter portion at least one of the one or more velour yarns that is interwoven with the weft yarn passes with a second frequency of interlacing is incorporated into the woven base and is interwoven with the weft yarn passes to have a frequency of interlacing that is larger than the second frequency of interlacing. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification