EP0546021B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Self-supporting woven vascular graft
Assignee: Boston Scientific Scimed Inc
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Filing: 1991-08-27
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Granted: 1995-11-08
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Expires: 2011-08-27
Abstract
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.
Inventors
- 👤 Peter J. Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 04:05
CPC Classifications
D; D03; D03D; D03D3/00; D03D3/02; A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; D03D15/00; D03D15/20; D03D15/283; D03D15/40; D03D15/41; D03D15/44; D03D15/46; D03D15/49; D03D15/50; D03D15/56; D03D15/573; D03D27/00; A61F2002/065; D10; D10B; D10B2321/00; D10B2321/04; D10B2321/042; D10B2331/00; D10B2331/04; D10B2331/10; D10B2401/00; D10B2401/04; D10B2401/041; D10B2401/06; D10B2401/061; D10B2401/062; D10B2509/00; D10B2509/06
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
68 words
A self-supporting tubular woven synthetic vascular graft (31, 41) including a weft yarn (13) including a stiffening component (22) to provide radial burst strength, dimensional stability and radial rigidity sufficient to maintain the lumen of the tubular structure open, characterised in that the weft yarn (13) including the stiffening component (22) is woven throughout the entire length of the weave and present in each pic of the weave.
Claim 2
Dependent Claim
44 words
A self-supporting tubular woven synthetic vascular graft of Claim 1, wherein the weft yarn (13) includes a monofilament fibre (22) combined with a multifilament yarn (23) woven together throughout the entire length of the weave and be present in each pick in the weave.
Claim 3
Dependent Claim
17 words
The woven synthetic vascular graft of Claim 2, wherein the monofilament textile is a polyethylene terephthalate yarn.
Claim 4
Dependent Claim
22 words
The woven synthetic vascular graft of Claim 2, further characterised by the monofilament twisted with the multifilament yarn in the weft yarn.
Claim 5
Dependent Claim
18 words
The woven synthetic vascular graft of Claim 2, further including a plurality of warp ends including multifilament yarns.
Claim 6
Dependent Claim
41 words
A self-supporting woven synthetic vascular graft (31, 41) woven with a weft yarn (13) including a stiffening component (22) and a plurality of warp ends (12), characterised in that at least a portion of said warp ends are elastomeric yarns (19).
Claim 7
Dependent Claim
46 words
A self-supporting tubular woven synthetic vascular graft according to Claim 1, comprising: - a plurality of warp ends (12) including multifilament yarns (21); and - a weft yarn (13) including a monofilament component (22) combined with multifilament yarns (23) throughout the entire length of the weave.
Claim 8
Dependent Claim
14 words
The woven vascular graft of Claim 7, wherein the multifilament yarns are polyethylene terephthalate.
Claim 9
Dependent Claim
16 words
The woven vascular graft of Claim 7, wherein the monofilament component is a polyethylene terephthalate yarn.
Claim 10
Dependent Claim
19 words
The woven vascular graft of Claim 7, wherein the weft yarn includes monofilament yarn twisted together with multifilament yarn.
Claim 11
Dependent Claim
19 words
The woven vascular graft of Claim 10, wherein the multifilament component of the filling yarn is polyethylene terephthalate yarn.
Claim 12
Dependent Claim
20 words
The woven vascular graft of Claim 11, wherein the multifilament and monofilament components of the weft yarn are polyethylene terephthalate.
Claim 13
Dependent Claim
26 words
The woven vascular graft of Claim 12, wherein the monofilament component of the weft yarn is polyethylene terephthalate wound together with preshrunk, texturised multifilament polyethylene terephthalate.
Claim 14
Dependent Claim
16 words
The woven vascular graft of Claim 13, wherein the multifilament yarn of the warp is preshrunk.
Claim 15
Dependent Claim
14 words
The woven vascular graft of Claim 14, wherein the preshrunk yarn is polyethylene terephthalate.
Claim 16
Dependent Claim
17 words
The woven vascular graft of Claim 7, including a plurality of warp ends of an elastomeric yarn.
Claim 17
Dependent Claim
13 words
The woven vascular graft of Claim 16, wherein the elastomeric yarn is polyurethane.
Claim 18
Dependent Claim
16 words
The woven vascular graft of Claim 16, wherein the elastomeric yarn is a styrene-ethylene-butylene-styrene block copolymer.
Claim 19
Dependent Claim
21 words
The woven vascular graft of Claim 7, wherein the multifilament warp yarns include preshrunk texturised and unshrunk, untexturised polyethylene terephthalate yarn.
Claim 20
Dependent Claim
21 words
The woven vascular graft of Claim 7, wherein the multifilament warp yarns include preshrunk texturised and unshrunk texturised polyethylene terephthalate yarn.
Claim 21
Dependent Claim
26 words
The woven vascular graft of Claim 7, wherein the warp ends include a plurality of elastomeric yarns, and the elastomeric yarn alternates with the multifilament yarn.
Claim 22
Dependent Claim
20 words
The woven vascular graft of Claim 21, wherein two ends of multifilament yarn alternate with one end of elastomeric yarn.
Claim 23
Dependent Claim
26 words
The woven vascular graft of Claim 7, wherein the graft has at least one velour surface of a plurality of warp pile ends of multifilament yarn.
Claim 24
Dependent Claim
18 words
The woven vascular graft of Claim 23, wherein the warp pile end alternates between each warp ground ends.
Claim 25
Dependent Claim
38 words
The woven vascular graft of Claim 24, 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, texturised multifilament yarn.
Claim 26
Dependent Claim
17 words
The woven vascular graft of Claim 25, wherein the warp pile yarn is unshrunk, texturised polyethylene terephthalate.
Claim 27
Dependent Claim
27 words
The woven vascular graft of Claim 2, wherein the weft yarn includes a monofilament having a diameter from about 0.05 to 0.25 mm (2 to 10 mils).
Claim 28
Dependent Claim
71 words
A self-supporting tubular single velour woven synthetic vascular graft incorporating a weft yarn including a stiffening component to provide radial burst strength, dimensional stability and radial rigidity to maintain the lumen of the tubular structure open and a plurality of warp grounds ends characterised in that the warp ground ends include multifilament yarn and elastomeric yarn; - a plurality of warp pile ends of multifilament yarn; and - monofilament weft yarn.
Claim 29
Dependent Claim
20 words
The woven vascular graft of Claim 28, wherein the weft yarn is a monofilament yarn wound together with filament yarn.
Claim 30
Dependent Claim
24 words
The woven vascular graft of Claim 28, wherein the weft yarn is monofilament polyethylene terephthalate wound together with preshrunk texturised multifilament polyethylene terephthalate yarns.
Claim 31
Dependent Claim
23 words
The woven vascular graft of Claim 30, wherein the warp ground ends are alternating preshrunk untexturised multifilament polyethylene terephthalate yarns and elastomeric yarns.
Claim 32
Dependent Claim
40 words
The woven vascular graft of Claim 31, 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 ends of unshrunk texturised multifilament polyethylene terephthalate yarn.
Claim 33
Dependent Claim
16 words
The woven vascular graft of Claim 7, wherein the ends of the tube have been cauterised.
Claim 34
Dependent Claim
21 words
The woven vascular graft of Claim 7, wherein the tubular graft is bifurcated having a main body portion and two branches.
Claim 35
Dependent Claim
18 words
The woven vascular graft of Claim 7, wherein the graft has a circular cross-section and is straight longitudinally.
Claim 36
Dependent Claim
20 words
The woven vascular graft of Claim 7, wherein the graft has a circular cross-section and is curved along its length.
Claim 37
Dependent Claim
85 words
A process of preparing a self-supporting woven vascular graft (31, 41), comprising: - weaving a tube of a plurality of warp ends including multifilament yarns (21) with a weft yarn (13) of a stiffening component (22) combined with a multifilament yarn (23); - scouring said woven tube (31, 41); and - heat setting the fabric; characterised in that the weft yarn (13) including the stiffening component (22) is woven throughout the entire length of the weave and is present in each pic of the weave.
Claim 38
Dependent Claim
15 words
The process of Claim 37, including weaving the tube with warp ends of elastomeric yarn.
Claim 39
Dependent Claim
33 words
The process of Claim 37, wherein heat setting is carried out by placing the tube on a straight mandrel and heating to set the tube to a round cross-section and longitudinally straight shape.
Claim 40
Dependent Claim
32 words
The process of Claim 37, where the heat setting is carried out by placing the tube on a curved mandrel, applying heat to set the tube into the shape of the mandrel.
References Cited (Backward Citations)
No citation records indexed.
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