US4578451A
Expired / Lapsed
US
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Surgical filaments from block copolyetheramides
Assignee: Ethicon Inc
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Filing: 1983-07-15
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Granted: 1986-03-25
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Expires: 2003-07-15
Abstract
Abstract Surgical filaments such as sutures and ligatures are produced from block copolyetheramides. The filaments combine high strength with high compliance.
Inventors
- 👤 Gregory A. Weaver
- 👤 Lester F. Price
- 👤 Crawford R. Britt
- 👤 W. Shalaby Shalaby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:19
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/04; A61L27/00; A61L27/14; A61L27/18
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
In a surgical filament comprising a drawn and oriented polymer, the improvement which comprises using as the polymer a block copolyetheramide consisting essentially of (a) polyamide blocks derived from C 6 to C 12 aliphatic omega-amino-acids of lactams or the reaction product of a C 6 to C 12 aliphatic diacid with a C 6 to C 12 aliphatic diamine, and (b) polyether blocks consisting essentially of polyalkylene ethers wherein the individual alkylene groups are C 2 to C 6 polymethylene, wherein said surgical filament has a straight tensile strength of at least 50,000 psi and a Young's modulus below 250,000 psi.
Claim 2
Dependent Claim
102 words
In a surgical filament comprising a drawn and oriented polymer, the improvement which comprises using as the polymer a block copolyetheramide consisting essentially of (a) polyamide blocks derived from C 6 to C 12 aliphatic omega-amino-acids of lactams or the reaction product of a C 6 to C 12 aliphatic diacid with a C 6 to C 12 aliphatic diamine, and (b) polyether blocks consisting essentially of polyalkylene ethers wherein the individual alkylene groups are C 2 to C 6 polymethylene, wherein said surgical filament has a straight tensile strength of at least 50,000 psi and a Young's modulus below 250,000 psi.
Claim 3
Dependent Claim
19 words
The surgical filament of claim 1 wherein said filament is attached at least at one end to a needle.
Claim 4
Dependent Claim
11 words
The surgical filament of claim 1 wherein said filament is sterile.
Claim 5
Dependent Claim
19 words
The surgical filament of claim 1 wherein said block copolyetheramide contains at least one polyamide segment derived from laurolactam.
Claim 6
Dependent Claim
20 words
The surgical filament of claim 1 wherein said block copolyetheramide contains at least one polyamide segment derived from omega-amino-undecanoic acid.
Claim 7
Dependent Claim
16 words
The surgical filament of claim 1 wherein said block copolyetheramide contains at least one polyoxytetramethylene segment.
Claim 8
Dependent Claim
16 words
The surgical filament of claim 4 wherein said block copolyetheramide contains at least one polyoxytetramethylene segment.
Claim 9
Dependent Claim
16 words
The surgical filament of claim 5 wherein said block copolyetheramide contains at least one polyoxytetramethylene segment.
Claim 10
Dependent Claim
27 words
The surgical filament of claim 1 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 11
Dependent Claim
27 words
The surgical filament of claim 4 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 12
Dependent Claim
27 words
The surgical filament of claim 5 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 13
Dependent Claim
27 words
The surgical filament of claim 6 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 14
Dependent Claim
27 words
The surgical filament of claim 7 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 15
Dependent Claim
27 words
The surgical filament of claim 8 wherein said filament has a straight tensile strength of at least 75,000 psi and a Young's modulus below about 200,000 psi.
Claim 16
Dependent Claim
13 words
The surgical filament of claim 1 in the form of a fibrous prosthesis.
References Cited (Backward Citations)
US2216835A
Cited
US3044987A
Cited
US3384681A
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US4209607A
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US4224946A
Cited
US4246904A
Cited
US4314561A
Cited
US4343931A
Cited
US4361680A
Cited
US4438240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |