EP0397500A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Synthetic semiabsorbable yarn, fabric and tubular prosthesis
Assignee: United States Surgical Corp
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Filing: 1990-05-10
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Granted: —
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Expires: 2010-05-10
Abstract
Abstract A composite yarn (10) possessing a nonabsorbable, elastic core yarn component (12) and an absorbable, relatively inelastic sheath yarn component (14) is employed in the manufacture of a porous tubular prosthesis (40) useful, e.g. in vascular reconstruction.
Inventors
- 👤 Donald S. Kaplan
- 👤 John Kennedy
- 👤 Ross R. Muth
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:10
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/448; A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61L; A61L27/00; A61L27/50; A61L27/58; D02G3/22; D02G3/32; D02G3/328; A61F2210/00; A61F2210/0004
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
39 words
A synthetic, semiabsorbable composite yarn (10) which comprises: a) a nonabsorbable, elastic core yarn (12) imparting resiliency to the composite yarn; and b) at least one absorbable, relatively inelastic sheath yearn (14) imparting transverse strength to the composite yarn.
Claim 2
Dependent Claim
39 words
A synthetic, semiabsorbable composite yarn (10) which comprises: a) a nonabsorbable, elastic core yarn (12) imparting resiliency to the composite yarn; and b) at least one absorbable, relatively inelastic sheath yearn (14) imparting transverse strength to the composite yarn.
Claim 3
Dependent Claim
22 words
Yarn as claimed in Claim 1 in which the core yarn and/or sheath yarn(s) comprises one or multiple filaments (22, 24, 26).
Claim 4
Dependent Claim
23 words
Yarn as claimed in Claim 2 in which the core yarn and/or sheath yarn(s) comprises twisted or intertwined multiple filaments (13, 15, 17).
Claim 5
Dependent Claim
23 words
Yarn as claimed in Claim 3 in which the denier of an individual filament is in a range of from 0.2 to 6.0.
Claim 6
Dependent Claim
23 words
Yarn as claimed in Claim 4 in which the denier of an individual filament is in a range of from 0.4 to 3.0.
Claim 7
Dependent Claim
24 words
Yarn as claimed in any one of the preceding claims in which the core yarn possesses an elongation at break of at least 30%.
Claim 8
Dependent Claim
20 words
Yarn as claimed in Claim 6 in which the core yarn possesses an elongation at break of at least 40%.
Claim 9
Dependent Claim
20 words
Yarn as claimed in Claim 7 in which the core yarn possesses an elongation at break of at least 60%.
Claim 10
Dependent Claim
25 words
Yarn as claimed in any one of the preceding claims in which the sheath yarn possesses a straight tensile strength of at least 2.0 GPa.
Claim 11
Dependent Claim
21 words
Yarn as claimed in Claim 9 in which the sheath yarn possesses a straight tensile strength of at least 4.0 GPa.
Claim 12
Dependent Claim
21 words
Yarn as claimed in Claim 10 in which the sheath yarn possesses a straight tensile strength of at least 6 GPa.
Claim 13
Dependent Claim
40 words
Yarn as claimed in any one of the preceding claims in which the overall denier of the core yarn and/or sheath yarn is from 20 to 600 and the overall denier of the composite yarn is from 40 to 1200.
Claim 14
Dependent Claim
36 words
Yarn as claimed in Claim 12 in which the overall denier of the core yarn and/or sheath yarn is from 40 to 200 and the overall denier of the composite yarn is from 80 to 400.
Claim 15
Dependent Claim
27 words
Yarn as claimed in any one of the preceding claims, wherein the core yarn represents from 20% to 80% of the total weight of the composite yarn.
Claim 16
Dependent Claim
23 words
Yarn as claimed in Claim 14 wherein the core yarn represents from 30% to 80% of the total weight of the composite yarn.
Claim 17
Dependent Claim
27 words
Yarn as claimed in any one of the preceding claims in which a sheath yarn (14) is wound about the core yarn (12) in direct contact therewith.
Claim 18
Dependent Claim
28 words
Yarn as claimed in any one of the preceding claims in which a first sheath yarn (14) is helically wound around the core yarn in a first direction.
Claim 19
Dependent Claim
27 words
Yarn as claimed in Claim 17 in which a second sheath yarn (16) is helically wound around the first sheath yarn (14) in a second, opposite direction.
Claim 20
Dependent Claim
25 words
Yarn as claimed in Claim 18 in which the second sheath yarn (16) exhibits a higher rate of absorbability than the first sheath yarn (14).
Claim 21
Dependent Claim
20 words
Yarn as claimed in any one of the preceding claims wherein a hydrophilic coating is applied to the core yarn.
Claim 22
Dependent Claim
34 words
A fabric (30) manufactured from yarn as claimed in any one of the preceding claims, the fabric possessing a body fluid-impervious coating of an elastomeric absorbable material applied to at least one surface thereof.
Claim 23
Dependent Claim
25 words
Fabric as claimed in Claim 21 in which the elastomeric absorbable material is a polymer the backbone of which contains at least one hydrophilic sequence.
Claim 24
Dependent Claim
46 words
A tubular prosthesis manufactured from yarn as claimed in any one of Claims 1 to 20, or fabric as claimed in Claims 21 or 22, the tubular prosthesis (40) possessing a body fluid-impervious coating of an elastomeric absorbable material applied to at least one surface thereof.
References Cited (Backward Citations)
No citation records indexed.
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