Patent US6162537A successfully refreshed from Google Patents.
US6162537A
Expired / Lapsed
US
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Implantable fibers and medical articles
Assignee: Ascend Performance Materials Operations LLC
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Filing: 1997-10-31
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Granted: 2000-12-19
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Expires: 2017-10-31
Abstract
Abstract An implantable medical article as well as an implantable fiber which is particularly useful for medical implants is disclosed. The fiber includes comprises a first component formed from a substantially resorbable material and a second component formed from a fiber-forming polymer.
Inventors
- 👤 Donald H. Martin
- 👤 John H. Southern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:40
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/16; A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L17/00; A61L17/06; A61L17/10; A61L17/12; A61L17/14; A61L17/145; A61L27/00; A61L27/40; A61L27/44; A61L27/48; A61L31/00; A61L31/12; A61L31/125; A61L31/129; D01F8/06; D01F8/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2929; Y10T428/2931; Y10T428/2973; Y10T428/2978; Y10T428/298; Y10T442/00; Y10T442/30; Y10T442/3146; Y10T442/3154
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
47 words
A bicomponent fiber comprising a first polymer component formed from a resorbable material and a second component formed from a fiber-forming polymer which is non-resorbable wherein the polymer chains in said first and second components are simultaneously oriented by drawing the fiber during or subsequent to co-extrusion.
Claim 2
Dependent Claim
47 words
A bicomponent fiber comprising a first polymer component formed from a resorbable material and a second component formed from a fiber-forming polymer which is non-resorbable wherein the polymer chains in said first and second components are simultaneously oriented by drawing the fiber during or subsequent to co-extrusion.
Claim 3
Dependent Claim
17 words
The bicomponent fiber according to claim 1 wherein said second component is disposed within said first component.
Claim 4
Dependent Claim
24 words
The bicomponent fiber according to claim 1 wherein said second component is selected from the group consisting of polyesters, polyamides, polyolefins, and segmented polyurethanes.
Claim 5
Dependent Claim
23 words
The bicomponent fiber according to claim 1 wherein said second component is selected from the group consisting of polypropylene, polyethylene, polybutyleneterephthalate and polyhexamethyleneterephthalate.
Claim 6
Dependent Claim
17 words
The bicomponent fiber according to claim 1 wherein said first component induces a biopositive response in vivo.
Claim 7
Dependent Claim
33 words
The bicomponent fiber according to claim 1 wherein said first component is selected from the group consisting of polyglycolides, polydioxanones, polyhydroxyalkanoates, polylactides, alginates, chitosans, collagens, polyalkylene oxalates, polyanhydrides, poly(glycolide-co-trimethylene carbonate), polyesteramides, and polydepsipeptides.
Claim 8
Dependent Claim
19 words
The bicomponent fiber according to claim 1 wherein said first component is a polyglycolide polymer or a polyglycolide-polylactide copolymer.
Claim 9
Dependent Claim
21 words
The bicomponent fiber according to claim 1 wherein at least one of said components further comprises at least one pharmaceutical agent.
Claim 10
Dependent Claim
18 words
The bicomponent fiber according to claim 1 wherein said first component is substantially free of cracks or delamination.
Claim 11
Dependent Claim
22 words
The bicomponent fiber according to claim 1 wherein said first component possesses a substantially uniform thickness along the axis of the fiber.
Claim 12
Dependent Claim
26 words
The bicomponent fiber according to claim 1 wherein a volume ratio of said first component to said second component is from about 1:10 to about 10:1.
Claim 13
Dependent Claim
16 words
The bicomponent fiber according to claim 11 wherein the first polymer component is a fiber-forming polymer.
Claim 14
Dependent Claim
29 words
The bicomponent fiber according to claim 1, wherein the volume ratio of said first component to said second component is substantially the same along the length of the fiber.
Claim 15
Dependent Claim
30 words
The bicomponent fiber according to claim 1 produced by a process, comprising simultaneously melt-extruding from a spinnerette in a sheath-core filament configuration, the first polymer component and the second component.
Claim 16
Dependent Claim
81 words
The bicomponent fiber according to claim 1 produced by a process, comprising the steps of: (a) simultaneously solution-spinning from a spinnerette in a sheath-core filament configuration, a first solution comprising a first solvent and the first polymer component and a second solution comprising a second solvent and the second component, thereby forming a prefilament; and (b) removing said first and second solvents from said prefilament thereby forming a bicomponent fiber wherein said second component is substantially disposed within said first component.
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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) | 2003-12-19 | 2004-06-19 | 2004-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-19 | 2008-06-19 | 2008-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-19 | 2012-06-19 | 2012-12-19 | $7700.00 | Window Closed / Lapsed |