Patent US5470340A successfully refreshed from Google Patents.
US5470340A
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US
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Copolymers of (p-dioxanone/glycolide and/or lactide) and p-dioxanone
Assignee: Ethicon Inc
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Filing: 1993-10-06
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Granted: 1995-11-28
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Expires: 2013-10-06
Abstract
Abstract A copolymer of p-dioxanone and a prepolymer of p-dioxanone and lactide and/or glycolide, and absorbable surgical devices such as sutures, surgical meshes, surgical staples, hemostatic clips, suture knot clips, and the like made therefrom.
Inventors
- 👤 Rao S. Bezwada
- 👤 Shalaby W. Shalaby
- 👤 Donald F. Koelmel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:33
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/664; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L31/00; A61L31/04; A61L31/06; C08G63/02; C08G63/06; C08G63/08
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
73 words
A copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C.
Claim 2
Dependent Claim
73 words
A copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C.
Claim 3
Dependent Claim
22 words
The 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
24 words
The copolymer of claim 2 wherein the inherent viscosity of the copolymer is in the range of from about 1.2 to about 2.0 dL/g.
Claim 5
Dependent Claim
23 words
The copolymer of claim 1 wherein the amount of prepolymer is in the range of from about 5 to about 40 weight percent.
Claim 6
Dependent Claim
30 words
The copolymer of claim 4 wherein the mole ratio of lactide or glycolide monomer to p-dioxanone in the prepolymer is in the range of from about 50:50 to about 5:95.
Claim 7
Dependent Claim
79 words
An absorbable surgical filament prepared from a copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C.
Claim 8
Dependent Claim
79 words
An absorbable surgical filament prepared from a copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C.
Claim 9
Dependent Claim
21 words
The absorbable surgical filament of claim 6 wherein the amount of prepolymer ranges from about 5 to about 40 weight percent.
Claim 10
Dependent Claim
32 words
The absorbable surgical filament of claim 7 wherein the mole ratio of lactide and/or glycolide monomer to p-dioxanone in the prepolymer is in the range of from about 50:50 to about 5:95.
Claim 11
Dependent Claim
28 words
The absorbable surgical filament of claim 6 wherein the filament exhibits a straight tensile strength greater than 40,000 psi and a knot tensile strength greater than 30,000 psi.
Claim 12
Dependent Claim
28 words
The absorbable 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 13
Dependent Claim
18 words
The absorbable surgical filament of claim 10 wherein the filament exhibits a Young's Modulus less than 250,000 psi.
Claim 14
Dependent Claim
17 words
The absorbable surgical filament of claim 10 wherein the filament exhibits an elongation less than 100 percent.
Claim 15
Dependent Claim
19 words
The absorbable surgical filament of claim 6 wherein the filament is in the form of an absorbable monofilament suture.
Claim 16
Dependent Claim
19 words
The absorbable surgical filament of claim 6 wherein the filament is in the form of an absorbable multifilament suture.
Claim 17
Dependent Claim
19 words
The absorbable monofilament suture of claim 13 wherein the absorbable monofilament suture is attached to at least one needle.
Claim 18
Dependent Claim
19 words
The absorbable multifilament suture of claim 14 wherein the absorbable multifilament suture is attached to at least one needle.
Claim 19
Dependent Claim
99 words
A surgical device prepared from a copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C. wherein the surgical device is selected from the group consisting of surgical meshes, surgical staples, hemostatic clips, and suture knot clips.
Claim 20
Dependent Claim
99 words
A surgical device prepared from a copolymer formed by reacting a) 5 to 80 weight percent of a prepolymer of p-dioxanone and a monomer selected from the group consisting of lactide, glycolide and combinations thereof, which has a melting point of less than 120° C.; b) with p-dioxanone to obtain a copolymer with an inherent viscosity in the range of from about 0.8 to about 3.0 dL/g in a 0.1 g/dL solution of hexafluoroisopropyl alcohol at 25° C. wherein the surgical device is selected from the group consisting of surgical meshes, surgical staples, hemostatic clips, and suture knot clips.
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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) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |