US5019094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline copolymers of p-dioxanone and poly(alkylene oxides)
Assignee: Ethicon Inc
•
Filing: 1990-05-09
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Granted: 1991-05-28
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Expires: 2010-05-09
Abstract
Abstract A crystalline copolymer of p-dioxanone and a poly(alkylene oxide), and absorbable surgical filaments and devices derived therefrom.
Inventors
- 👤 Rao S. Bezwada
- 👤 Shalaby W. Shalaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
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: 17
Claim 1
Independent Claim
28 words
A crystalline copolymer of p-dioxanone and an amount of a poly(alkylene oxide) effective to lower the modulus of the copolymer relative to the modulus of a p-dioxanone homopolymer.
Claim 2
Dependent Claim
28 words
A crystalline copolymer of p-dioxanone and an amount of a poly(alkylene oxide) effective to lower the modulus of the copolymer relative to the modulus of a p-dioxanone homopolymer.
Claim 3
Dependent Claim
23 words
The crystalline copolymer of claim 1 wherein the weight average molecular weight of the poly(alkylene oxide) is between about 2000 to about 25,000.
Claim 4
Dependent Claim
21 words
The crystalline copolymer of claim 2 wherein the amount of poly(alkylene oxide) is between about 2 to about 20 weight percent.
Claim 5
Dependent Claim
21 words
The crystalline copolymer of claim 3 wherein the amount of poly(alkylene oxide) is between about 3 to about 10 weight percent.
Claim 6
Dependent Claim
18 words
The crystalline copolymer of claim 4 wherein the poly(alkylene oxide) is poly(ethylene oxide) or a poly(ethylene oxide-co-propylene oxide).
Claim 7
Dependent Claim
36 words
The crystalline copolymer of claim 5 wherein the poly(ethylene oxide-co-propylene oxide) is a block copolymer of ethylene oxide and propylene oxide, a tetrafunctional block copolymer of ethylene oxide and propylene oxide, or an amine-terminated poly(alkylene oxide).
Claim 8
Dependent Claim
23 words
The crystalline copolymer of claim 6 wherein the crystallinity of the copolymer is greater than about 10 percent as measured by x-ray diffraction.
Claim 9
Dependent Claim
21 words
The crystalline copolymer of claim 7 wherein the inherent viscosity of the copolymer is between about 1.2 to about 3.5 dl/g.
Claim 10
Dependent Claim
16 words
An absorbable surgical filament prepared by melt spinning the crystalline copolymer of claim 1 or 8.
Claim 11
Dependent Claim
27 words
The surgical filament of claim 9 wherein the filament exhibits a straight tensile strength greater than 50,000 psi and a knot tensile strength greater than 30,000 psi.
Claim 12
Dependent Claim
27 words
The surgical filament of claim 10 wherein the filament exhibits a straight tensile strength greater than 60,000 psi and a knot tensile strength greater than 40,000 psi.
Claim 13
Dependent Claim
17 words
The surgical filament of claim 11 wherein the filament exhibits a Young's Modulus less than 400,000 psi.
Claim 14
Dependent Claim
17 words
The surgical filament of claim 12 wherein the filament exhibits a Young's Modulus less than 250,000 psi.
Claim 15
Dependent Claim
17 words
The surgical filament of claim 13 wherein the filament exhibits a Young's Modulus less than 100,000 psi.
Claim 16
Dependent Claim
16 words
The surgical filament of claim 14 wherein the filament is in the form of a monofilament.
Claim 17
Dependent Claim
22 words
The surgical filament of claim 15 wherein the filament is in the form of a suture with or without an attached needle.
References Cited (Backward Citations)
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US4643191A
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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) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |