US4534349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbable sutureless nerve repair device
Assignee: 3M Co
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Filing: 1984-01-12
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Granted: 1985-08-13
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Expires: 2004-01-12
Abstract
Abstract Medical devices for the sutureless repair of lacerated, severed, or grafted nerves comprising longitudinally-openable, porous, rough-surfaced tubes of a body-absorbable polymer are disclosed. The tubular devices of the invention are prepared by sintering or otherwise bonding together granules or fibers, or melt processing suitable polymers in the form of the desired device.
Inventors
- 👤 Thomas H. Barrows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:09
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61B; A61B17/00; A61B17/11; A61B17/1128; A61L27/14; A61L27/18; A61B2017/00004; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2210/00; A61F2210/0004; A61L2430/00; A61L2430/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
72 words
A medical device for use in the sutureless repair of a nerve comprising a longitudinally-openable, porous, rough-surfaced tube of at least one body-absorbable polymer, said tube having a porosity in the range of 25 to 95 percent by volume, a coefficient of static friction, μ s , in the range of 0.40 to 0.90, and being capable of enclosing, holding in approximation, and protecting the ends of a severed or lacerated nerve.
Claim 2
Dependent Claim
72 words
A medical device for use in the sutureless repair of a nerve comprising a longitudinally-openable, porous, rough-surfaced tube of at least one body-absorbable polymer, said tube having a porosity in the range of 25 to 95 percent by volume, a coefficient of static friction, μ s , in the range of 0.40 to 0.90, and being capable of enclosing, holding in approximation, and protecting the ends of a severed or lacerated nerve.
Claim 3
Dependent Claim
28 words
The device according to claim 1 wherein said polymer is selected from the group consisting of polylactic acid, polyglycolic acid, polydioxanone, poly(lactide-co-glycolide), polyesteramides, and copolymers and mixtures thereof.
Claim 4
Dependent Claim
18 words
The device according to claim 2 wherein said polymer is a mixture of polyglycolic acid and polylactic acid.
Claim 5
Dependent Claim
39 words
The device according to claim 1 wherein said polymer is in a form selected from the group consisting of (a) a web of non-woven fiber and (b) a woven fabric, said polymer being bonded by treatment with a solvent.
Claim 6
Dependent Claim
27 words
The device according to claim 4 wherein said polymer is polyglycolic acid in the form of a web and bonding is achieved by treatment with a solvent.
Claim 7
Dependent Claim
28 words
The device according to claim 4 wherein said polymer is polyglycolic acid in the form of a web and bonding is achieved by treatment with a polymer solution.
Claim 8
Dependent Claim
17 words
The device according to claim 1 wherein said device is comprised of bonded granules of said polymer.
Claim 9
Dependent Claim
12 words
The device according to claim 1 wherein said polymer is poly[oxysuccinoyloxydodecane-1,12-di(amidocarbonylmethylene)-co-10 percent-oxysuccinoyloxy-4,-9-dioxadodecane-1,12-di(amidocarbonylmethylene)].
Claim 10
Dependent Claim
11 words
The device according to claim 1 wherein said polymer is poly[oxysuccinoyloxyhexane-1,6-di(amidocarbonylmethylene)].
Claim 11
Dependent Claim
21 words
The device according to claim 1 wherein said tube has an inside diameter in the range of 0.1 to 10 mm.
Claim 12
Dependent Claim
24 words
The device according to claim 1 wherein said coefficient of static friction of said rough-surfaced tube is in the range of 0.05 to 0.80.
References Cited (Backward Citations)
US3916905A
Cited
US3960151A
Cited
US3960152A
Cited
US4033938A
Cited
US3937223A
Cited
US4074366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |