Patent US5217495A successfully refreshed from Google Patents.
US5217495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic semiabsorbable composite yarn
Assignee: United States Surgical Corp
•
Filing: 1990-11-13
•
Granted: 1993-06-08
•
Expires: 2010-11-13
Abstract
Abstract A semi-bioabsorbable connective tissue prosthesis, e.g., a replacement for the human anterior cruciate ligament, is provided whose stress-strain characteristics closely match those of the natural tissue.
Inventors
- 👤 Donald S. Kaplan
- 👤 John Kennedy
- 👤 Ross R. Muth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:08
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/08; A61L; A61L27/00; A61L27/50; A61L27/58; D; D02; D02G; D02G3/00; D02G3/22; D02G3/32; D02G3/328; D02G3/44; D02G3/448; D04; D04C; D04C1/00; D04C1/02; D04C1/06; D04C1/12; A61F2210/00; A61F2210/0004; D10; D10B; D10B2401/00; D10B2401/06; D10B2401/061; D10B2401/12; D10B2509/00; Y; Y10; Y10S; Y10S623/00; Y10S623/924; Y10S623/926
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
50 words
A synthetic, semiabsorbable composite yarn which comprises: a) a nonabsorbable, elastic core yarn component imparting resiliency to the composite yarn; and b) at least one absorbable, relatively inelastic sheath yarn component imparting transverse strength to the composite yarn; wherein said sheath yarn component is braided about said core yarn component.
Claim 2
Dependent Claim
50 words
A synthetic, semiabsorbable composite yarn which comprises: a) a nonabsorbable, elastic core yarn component imparting resiliency to the composite yarn; and b) at least one absorbable, relatively inelastic sheath yarn component imparting transverse strength to the composite yarn; wherein said sheath yarn component is braided about said core yarn component.
Claim 3
Dependent Claim
16 words
The composite yarn of claim 1 wherein the core yarn component comprises one or multiple filaments.
Claim 4
Dependent Claim
17 words
The composite yarn of claim 2 wherein the core yarn component comprises twisted or intertwined multiple filaments.
Claim 5
Dependent Claim
16 words
The composite yarn of claim 1 wherein the sheath yarn component comprises one or multiple filaments.
Claim 6
Dependent Claim
17 words
The composite yarn of claim 4 wherein the sheath yarn component comprises twisted or intertwined multiple filaments.
Claim 7
Dependent Claim
30 words
The composite yarn of claim 1 in which the denier of an individual filament in said core yarn component and/or sheath yarn component is from about 0.2 to about 6.0.
Claim 8
Dependent Claim
31 words
The composite yarn of claim 6 in which the denier of an individual filament in said core yarn component and/or said sheath yarn component is from about 0.4 to about 3.0.
Claim 9
Dependent Claim
47 words
The composite yarn of claim 1 in which the core yarn component 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, isobutylenes, isoprenes, polyacrylates, polybutadienes, polyurethanes, and polyetherpolyester copolymers.
Claim 10
Dependent Claim
29 words
The composite yarn of claim 8 in which the core yarn component is manufactured from a family of copolyester elastomers based on (soft) polyester segments and (hard) polyester segments.
Claim 11
Dependent Claim
16 words
The composite yarn of claim 8 in which the core yarn composite is manufactured from spandex.
Claim 12
Dependent Claim
22 words
The composite yarn of claim 1 in which the core yarn component possesses an elongation at break of at least about 30%.
Claim 13
Dependent Claim
22 words
The composite yarn of claim 11 in which the core yarn component possesses an elongation at break of at least about 40%.
Claim 14
Dependent Claim
22 words
The composite yarn of claim 12 in which the core yarn component possesses an elongation at break of at least about 50%.
Claim 15
Dependent Claim
48 words
The composite yarn of claim 1 in which the sheath yarn component 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 16
Dependent Claim
21 words
The composite yarn of claim 14 wherein said sheath yarn component is manufactured from polymer having high lactide or glycolide content.
Claim 17
Dependent Claim
23 words
The composite yarn of claim 15 wherein said polymer comprises about 70 to about 90 mole percent lactide with the balance being glycolide.
Claim 18
Dependent Claim
23 words
The composite yarn of claim 16 wherein said polymer comprises about 75 to about 85 mole percent lactide with the balance being glycolide.
Claim 19
Dependent Claim
55 words
The composite yarn of claim 1 wherein said core yarn component is made up of one or more biocompatible, essentially non-bioabsorbable, elastic filaments, and said braided sheath yarn component comprises individual sheath yarn filaments or filament bundles which traverse said core yarn component in a braided configuration to provide said braided, tubular sheath yarn component.
Claim 20
Dependent Claim
22 words
The composite yarn of claim 18 wherein said sheath yarn component comprises sheath yarn filaments or filament bundles of different chemical composition.
Claim 21
Dependent Claim
44 words
The composite yarn of claim 19 wherein a portion of said sheath yarn filaments or bundles is formed of a polymer exhibiting relatively slow bioabsorption and a remainder of said sheath yarn filaments or bundles is formed of a polymer exhibiting relatively fast bioabsorption.
Claim 22
Dependent Claim
42 words
The composite yarn of claim 20 wherein said polymer exhibiting relatively slow bioabsorption is polylactide or a copolymer comprising a high lactide mole percentage and said polymer exhibiting relatively fast bioabsorption is polyglycolide or a copolymer comprising a high glycolide mole percentage.
Claim 23
Dependent Claim
56 words
The composite yarn of claim 21 wherein about 30 to 70% by weight of said sheath yarn filaments or bundles is formed of said polylactide or copolymer comprising a high lactide mole percentage and the remainder of said sheath yarn filaments or bundles is formed of said glycolide or copolymer comprising a high glycolide mole percentage.
Claim 24
Dependent Claim
28 words
The composite yarn of claim 22 wherein said core yarn filaments are manufactured from a family of copolyester elastomers based on (soft) polyether segments and (hard) polyester segments.
Claim 25
Dependent Claim
23 words
The composite yarn of claim 1 in which the sheath yarn component possesses a straight tensile strength of at least about 30,000 p.s.i.
Claim 26
Dependent Claim
23 words
The composite yarn of claim 24 in which the sheath yarn component possesses a straight tensile strength of at least about 60,000 p.s.i.
Claim 27
Dependent Claim
23 words
The composite yarn of claim 25 in which the sheath yarn component possesses a straight tensile strength of at least about 90,000 p.s.i.
Claim 28
Dependent Claim
42 words
The composite yarn of claim 1 in which the overall denier of the core yarn component and/or sheath yarn component is from about 20 to about 600 and the overall denier of the composite yarn is from about 40 to about 1,200.
Claim 29
Dependent Claim
42 words
The composite yarn of claim 27 in which the overall denier of the core yarn component and/or sheath yarn component is from about 40 to about 300 and the overall denier of the composite yarn is from about 80 to about 600.
Claim 30
Dependent Claim
26 words
The composite yarn of claim 1 wherein the core yarn component represents from about 20% to about 80% of the total weight of the composite yarn.
Claim 31
Dependent Claim
26 words
The composite yarn of claim 29 wherein the core yarn component represents from about 30% to about 70% of the total weight of the composite yarn.
Claim 32
Dependent Claim
17 words
The composite yarn of claim 1 wherein a hydrophilic coating is applied to the core yarn component.
Claim 33
Dependent Claim
14 words
A connective tissue prothesis manufactured from said synthetic, semiabsorbable composite yarn of claim 1.
Claim 34
Dependent Claim
37 words
The connective tissue prothesis of claim 32 comprising: a) a core made up of said synthetic, semiabsorbable composite yarn extending in the lengthwise direction; and b) a sheath surrounding said core and being fabricated from biocompatible yarn.
Claim 35
Dependent Claim
19 words
The connective tissue prothesis of claim 33 wherein said sheath is also manufactured from said synthetic, semiabsorbable composite yarn.
Claim 36
Dependent Claim
18 words
The connective tissue prothesis of claim 32 comprising a tubular component fabricated from said synthetic, semiabsorbable composite yarn.
Claim 37
Dependent Claim
53 words
Method of manufacturing said synthetic, semiabsorbable composite yarn of claim 1, comprising: feeding said core component through a hollow spindle of a carrier braider, and braiding said sheath component from at least one rotating supply bobbin about said core component as said core component emerges from said hollow spindle in said carrier braider.
Claim 38
Dependent Claim
24 words
The method of claim 36, wherein filaments or filament bundles of different chemical composition are braided as said sheath component about said core component.
References Cited (Backward Citations)
US3463158A
Cited
US3537280A
Cited
US3688317A
Cited
US3878565A
Cited
US3805300A
Cited
US4340091A
Cited
US4208745A
Cited
US4047252A
Cited
US4193138A
Cited
US4229838A
Cited
US4187558A
Cited
US4713070A
Cited
US4286341A
Cited
US4301551A
Cited
US4378017A
Cited
GB2081756A
Cited
US4467595A
Cited
US4350731A
Cited
US4713075A
Cited
US4483023A
Cited
US4474851A
Cited
US4584722A
Cited
WO1984000302A1
Cited
US4517687A
Cited
US4668233A
Cited
US4678472A
Cited
US4610688A
Cited
US4834755A
Cited
US4530113A
Cited
US4894063A
Cited
EP0169045A2
Cited
US4642119A
Cited
US4621638A
Cited
US4663221A
Cited
EP0202444A2
Cited
US4871365A
Cited
US4718907A
Cited
US4624256A
Cited
US4693720A
Cited
US4775380A
Cited
US4822361A
Cited
US4695282A
Cited
US4650491A
Cited
EP0239775A2
Cited
US4942875A
Cited
US4795466A
Cited
EP0241252A2
Cited
US4788979A
Cited
EP0269184A2
Cited
US4816339A
Cited
US4816028A
Cited
WO1989001320A1
Cited
EP0334046A2
Cited
US4917700A
Cited
CA2016493A1
Cited
EP0397500A2
Cited
US4990158A
Cited
US5049158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |