US5047048A
Expired / Lapsed
US
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Crystalline copolymers of p-dioxanone and ε-caprolactone
Assignee: Ethicon Inc
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Filing: 1990-01-30
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Granted: 1991-09-10
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Expires: 2010-01-30
Abstract
Abstract Crystalline copolymers of ε-caprolactone and a monomer having the formula: ##STR1## Surgical filaments, especially monofilament sutures, prepared by melt spinning the crystalline copolymers described above.
Inventors
- 👤 Rao S. Bezwada
- 👤 Shalaby W. Shalaby
- 👤 Mo Erneta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/105; A61L31/00; A61L31/04; A61L31/06; C08G63/02; C08G63/06; C08G63/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
29 words
A crystalline copolymer of a monomer represented by the formula: ##STR5## wherein each R is independently hydrogen or methyl; and from about 5 to about 40 weight percent ε-caprolactone.
Claim 2
Dependent Claim
29 words
A crystalline copolymer of a monomer represented by the formula: ##STR5## wherein each R is independently hydrogen or methyl; and from about 5 to about 40 weight percent ε-caprolactone.
Claim 3
Dependent Claim
23 words
The crystalline copolymer of claim 1 wherein the crystallinity of the copolymer is greater than about 10 percent as measured by x-ray diffraction.
Claim 4
Dependent Claim
21 words
The crystalline copolymer of claim 2 wherein the intrinsic viscosity of the copolymer ranges from about 1.2 to about 3.0 dl/g.
Claim 5
Dependent Claim
13 words
The crystalline copolymer of claim 3 wherein the copolymer is a block copolymer.
Claim 6
Dependent Claim
15 words
The crystalline copolymer of claim 4 wherein the monomer represented by the formula is 1,4-dioxan-2-one.
Claim 7
Dependent Claim
20 words
The crystalline copolymer of claim 5 wherein the amount of ε-caprolactone ranges from about 5 to about 30 weight percent.
Claim 8
Dependent Claim
20 words
The crystalline copolymer of claim 6 wherein the amount of ε-caprolactone ranges from about 10 to about 20 weight percent.
Claim 9
Dependent Claim
15 words
An absorbable surgical filament prepared by melt spinning the copolymer of claim 1 or 7.
Claim 10
Dependent Claim
17 words
The absorbable surgical filament of claim 8 wherein the Young's Modulus is not greater than 300,000 psi.
Claim 11
Dependent Claim
27 words
The absorbable surgical filament of claim 9 wherein complete in vivo absorption of the filament implanted in an animal is not more than 210 days after implantation.
Claim 12
Dependent Claim
27 words
The absorbable surgical filament of claim 10 wherein the straight tensile strength is at least 50,000 psi and the knot tensile strength is at least 30,000 psi.
Claim 13
Dependent Claim
17 words
The absorbable surgical filament of claim 11 wherein the percent elongation is not greater than 80 percent.
Claim 14
Dependent Claim
13 words
The absorbable surgical filament of claim 12 in the form of a monofilament.
Claim 15
Dependent Claim
18 words
The absorbable surgical filament of claim 13 in the form of a suture with or without a needle.
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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |