US4994074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of ε-caprolactone, glycolide and glycolic acid for suture coatings
Assignee: Ethicon Inc
•
Filing: 1990-02-01
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Granted: 1991-02-19
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Expires: 2010-02-01
Abstract
Abstract Copolymer of a predominant amount of ε-caprolactone, the balance being glycolide and glycolic acid. Coating for an absorbable, multifilament surgical suture prepared by dissolving the copolymer in an organic solvent.
Inventors
- 👤 Rao S. Bezwada
- 👤 Alastair W. Hunter
- 👤 Shalaby W. Shalaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; A61B2017/00004
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
40 words
A copolymer of a predominant amount of ε-caprolactone and the balance glycolide and glycolic acid, at a concentration of glycolic acid such that the intrinsic viscosity of the copolymer in hexafluoroisopropyl alcohol is between about 0.15 to about 0.60 dl/g.
Claim 2
Dependent Claim
40 words
A copolymer of a predominant amount of ε-caprolactone and the balance glycolide and glycolic acid, at a concentration of glycolic acid such that the intrinsic viscosity of the copolymer in hexafluoroisopropyl alcohol is between about 0.15 to about 0.60 dl/g.
Claim 3
Dependent Claim
19 words
The copolymer of claim 1 wherein the amount of ε-caprolactone is between about 80 to about 95 mole percent.
Claim 4
Dependent Claim
19 words
The copolymer of claim 2 wherein the amount of ε-caprolactone is between about 90 to about 95 mole percent.
Claim 5
Dependent Claim
20 words
The copolymer of claim 3 wherein the intrinsic viscosity of the copolymer is between about 0.20 to about 0.50 dl/g.
Claim 6
Dependent Claim
20 words
The copolymer of claim 4 wherein the melting temperature of the copolymer is between about 35° to about 50° C.
Claim 7
Dependent Claim
20 words
The copolymer of claim 5 wherein the amount of glycolic acid is between about 1 to about 15 mole percent.
Claim 8
Dependent Claim
19 words
The copolymer of claim 6 wherein the amount of glycolide is between about 2 to about 10 mole percent.
Claim 9
Dependent Claim
21 words
A coating for a surgical suture comprising a solution of the copolymer of claim 1 or 7 in an organic solvent.
Claim 10
Dependent Claim
21 words
The coating of claim 8 wherein the amount of copolymer in solution is between about 1 to about 20 weight percent.
Claim 11
Dependent Claim
21 words
The coating of claim 9 wherein the suture is an absorbable monofilament or multifilament suture with or without an attached needle.
Claim 12
Dependent Claim
13 words
The coating of claim 10 wherein the suture is an absorbable multifilament suture.
Claim 13
Dependent Claim
17 words
The coating of claim 11 wherein the absorbable multifilament suture is in the form of a braid.
Claim 14
Dependent Claim
21 words
The coating of claim 12 wherein the suture is prepared from a polymer of a lactone or one or more lactones.
Claim 15
Dependent Claim
15 words
The coating of claim 13 wherein the multifilament suture is a poly(lactide-co-glycolide) braided multifilament suture.
Claim 16
Dependent Claim
11 words
An absorbable multifilament suture coated with the copolymer of claim 1.
Claim 17
Dependent Claim
11 words
An absorbable multifilament suture coated with the copolymer of claim 7.
References Cited (Backward Citations)
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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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |