US4990158A
Expired / Lapsed
US
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Synthetic semiabsorbable tubular prosthesis
Assignee: United States Surgical Corp
•
Filing: 1989-05-10
•
Granted: 1991-02-05
•
Expires: 2009-05-10
Abstract
Abstract A composite yarn possessing a nonabsorbable, elastic core yarn component and an absorbable, relatively inelastic sheath yarn component is employed in the manufacture of a porous tubular prosthesis useful, e.g., in vascular reconstruction.
Inventors
- 👤 Donald S. Kaplan
- 👤 John Kennedy
- 👤 Ross R. Muth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
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: 39
Claim 1
Independent Claim
36 words
A synthetic, semiabsorbable composite yarn which comprises: (a) a nonabsorbable, elastic core yarn imparting resiliency to the composite yarn; and, (b) at least one absorbable, relatively inelastic sheath yarn imparting transverse strength to the composite yarn.
Claim 2
Dependent Claim
36 words
A synthetic, semiabsorbable composite yarn which comprises: (a) a nonabsorbable, elastic core yarn imparting resiliency to the composite yarn; and, (b) at least one absorbable, relatively inelastic sheath yarn imparting transverse strength to the composite yarn.
Claim 3
Dependent Claim
16 words
The composite yarn of claim 1 in which the core yarn comprises one or multiple filaments.
Claim 4
Dependent Claim
17 words
The composite yarn of claim 1 in which the core yarn comprises twisted or intertwined multiple filaments.
Claim 5
Dependent Claim
21 words
The composite yarn of claim 3 in which the denier of an individual filament is from about 0.2 to about 6.0.
Claim 6
Dependent Claim
21 words
The composite yarn of claim 3 in which the denier of an individual filament is from about 0.4 to about 3.0.
Claim 7
Dependent Claim
46 words
The composite yarn of claim 1 in which the core yarn is manufactured from at least one polymeric material selected from the group consisting of ethylene homopolymer, propylene homopolymer, ethylene propylene copolymers, ethylene propylene terpolymers, fluorinated hydrocarbons, fluorosilicones, isobutylene isoprenes, polyacrylates, polybutadienes, polyurethanes, and polyetherpolyester copolymers.
Claim 8
Dependent Claim
21 words
The composite yarn of claim 1 in which the core yarn possesses an elongation at break of at least about 30%.
Claim 9
Dependent Claim
21 words
The composite yarn of claim 1 in which the core yarn possesses an elongation at break of at least about 40%.
Claim 10
Dependent Claim
21 words
The composite yarn of claim 1 in which the core yarn possesses an elongation at break of at least about 60%.
Claim 11
Dependent Claim
47 words
The composite yarn of claim 1 in which the sheath yarn is manufactured from an absorbable, relatively inelastic polymeric material derived at least in part from a monomer selected from the group consisting of glycolic acid, glycolide, lactic acid, lactide, p-dioxanone, trimethylene carbonate, e-caprolactone and hydroxycaproic acid.
Claim 12
Dependent Claim
22 words
The composite yarn of claim 1 in which the sheath yarn possesses a straight tensile strength of at least about 30,000 p.s.i.
Claim 13
Dependent Claim
22 words
The composite yarn of claim 1 in which the sheath yarn possesses a straight tensile strength of at least about 60,000 p.s.i.
Claim 14
Dependent Claim
22 words
The composite yarn of claim 1 in which the sheath yarn possesses a straight tensile strength of at least about 90,000 p.s.i.
Claim 15
Dependent Claim
40 words
The composite yarn of claim 1 in which the overall denier of the core yarn and/or sheath yarn is from about 20 to about 600 and the overall denier of the composite yarn is from about 40 to about 1200.
Claim 16
Dependent Claim
40 words
The composite yarn of claim 1 in which the overall denier of the core yarn and/or sheath yarn is from about 40 to about 200 and the overall denier of the composite yarn is from about 80 to about 400.
Claim 17
Dependent Claim
25 words
The composite yarn of claim 1 wherein the core yarn represents from about 20% to about 80% of the total weight of the composite yarn.
Claim 18
Dependent Claim
25 words
The composite yarn of claim 1 wherein the core yarn represents from about 30% to about 80% of the total weight of the composite yarn.
Claim 19
Dependent Claim
21 words
The composite yarn of claim 1 in which a sheath yarn is wound about the core yarn in direct contact therewith.
Claim 20
Dependent Claim
23 words
The composite yarn of claim 1 in which a first sheath yarn is helically wound around the core yarn in a first direction.
Claim 21
Dependent Claim
25 words
The composite yarn of claim 19 in which a second sheath yarn is helically wound around the first sheath yarn in a second, opposite direction.
Claim 22
Dependent Claim
23 words
The composite yarn of claim 20 in which the second sheath yarn exhibits a higher rate of absorbability than the first sheath yarn.
Claim 23
Dependent Claim
16 words
The composite yarn of claim 1 wherein a hydrophilic coating is applied to the core yarn.
Claim 24
Dependent Claim
29 words
A fabric manufactured from the composite yarn of claim 1, the fabric possessing a body fluid-impervious coating of an elastomeric absorbable material applied to at least one surface thereof.
Claim 25
Dependent Claim
37 words
The fabric of claim 23 in which the elastomeric absorbable material is a polymer derived at least in part from the group consisting of glycolic acid, glycolide, lactic acid, lactide, p-dioxanone, trimethylene carbonate, e-caprolactone and hydroxycaproic acid.
Claim 26
Dependent Claim
19 words
The fabric of claim 24 in which the polymer contains at least one hydrophilic sequence in the backbone thereof.
Claim 27
Dependent Claim
21 words
The fabric of claim 25 in which the hydrophilic sequence is selected from the group consisting of poly(oxyethylene), poly(oxypropylene) and poly(oxyethylene-oxypropylene).
Claim 28
Dependent Claim
11 words
The fabric of claim 23 which is woven, braided or knitted.
Claim 29
Dependent Claim
31 words
A tubular prosthesis manufactured from the composite yarn of claim 1, the tubular prosthesis possessing a body fluid-impervious coating of an elastomeric absorbable material applied to at least one surface thereof.
Claim 30
Dependent Claim
38 words
The tubular prosthesis of claim 28 in which the elastomeric absorbable material is a polymer derived at least in part from the group consisting of glycolic acid, glycolide, lactic acid, lactide, p-dioxanone, trimethylene carbonate, e-caprolactone and hydroxycaproic acid.
Claim 31
Dependent Claim
20 words
The tubular prosthesis of claim 29 in which the polymer contains at least one hydrophilic sequence in the backbone thereof.
Claim 32
Dependent Claim
22 words
The tubular prosthesis of claim 30 in which the hydrophilic sequence is selected from the group consisting of poly(oxyethylene), poly(oxypropylene) and poly(oxyethylene-oxypropylene).
Claim 33
Dependent Claim
12 words
The tubular prosthesis of claim 28 which is woven, braided or knitted.
Claim 34
Dependent Claim
13 words
The tubular prosthesis of claim 28 containing at least one medico-surgically useful substance.
Claim 35
Dependent Claim
12 words
The tubular prosthesis of claim 28 containing at least one anti-thrombogenic substance.
Claim 36
Dependent Claim
13 words
The tubular prosthesis of claim 34 in which the anti-thrombogenic substance is heparin.
Claim 37
Dependent Claim
31 words
A tubular prosthesis manufactured from the composite yarn of claim 18, the tubular prosthesis possessing a body fluid-impervious coating of an elastomeric absorbable material applied to at least one surface thereof.
Claim 38
Dependent Claim
16 words
The composite yarn of claim 1 in which a sheath yarn comprises one or multiple filaments.
Claim 39
Dependent Claim
17 words
The composite yarn of claim 1 in which a sheath yarn comprises twisted or intertwined multiple filaments.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |