EP0440416A2
Expired / Lapsed
EP
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Crystalline copolymers of p-dioxanone and epsilon-caprolactone
Assignee: Ethicon Inc
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Filing: 1991-01-29
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Granted: —
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Expires: 2011-01-29
Abstract
Abstract Crystalline copolymers of ε-caprolactone and a monomer having the formula: 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
EP
Data Source
google_patents
Last Synchronized
2026-10-24 05:37
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
31 words
A crystalline copolymer of a monomer represented by the formula and an amount of ε-caprolactone effective to lower the modulus of the copolymer relative to the modulus of a p-dioxanone homopolymer.
Claim 2
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 3
Dependent Claim
24 words
The crystalline copolymer of claim 1 or claim 2 wherein the intrinsic viscosity of the copolymer ranges from about 1.2 to about 3.0 dl/g.
Claim 4
Dependent Claim
14 words
The crystalline copolymer of any preceding claim wherein the copolymer is a block copolymer.
Claim 5
Dependent Claim
16 words
The crystalline copolymer of any preceding claim wherein the monomer represented by the formula is 1,4-dioxan-2-one.
Claim 6
Dependent Claim
21 words
The crystalline copolymer of any preceding claim wherein the amount of ε-caprolactone ranges from about 5 to about 40 weight percent.
Claim 7
Dependent Claim
20 words
The crystalline copolymer of claim 6 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 7 wherein the amount of ε-caprolactone ranges from about 10 to about 20 weight percent.
Claim 9
Dependent Claim
17 words
An absorbable surgical filament prepared by melt spinning the copolymer of any of claims 1 to 8.
Claim 10
Dependent Claim
17 words
The absorbable surgical filament of claim 9 wherein the Young's Modulus is not greater than 300,000 psi.
Claim 11
Dependent Claim
30 words
The absorbable surgical filament of claim 9 or claim 10 wherein complete in vivo absorption of the filament implanted in an animal is not more than 210 days after implantation.
Claim 12
Dependent Claim
31 words
The absorbable surgical filament of any of claims 9 to 11 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
21 words
The absorbable surgical filament of any of claims 9 to 12 wherein the percent elongation is not greater than 80 percent.
Claim 14
Dependent Claim
17 words
The absorbable surgical filament of any of claims 9 to 13 in the form of a monofilament.
Claim 15
Dependent Claim
22 words
The absorbable surgical filament of any of claims 9 to 14 in the form of a suture with or without a needle.
References Cited (Backward Citations)
No citation records indexed.
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