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US4620542A
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Ethylene-propylene copolymer sutures
Assignee: Ethicon Inc
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Filing: 1984-09-21
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Granted: 1986-11-04
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Expires: 2004-09-21
Abstract
Abstract Sterile surgical monofilament sutures are disclosed. The sutures are made from ethylene-propylene copolymers, and have improved compliance, compared with polypropylene homopolymer sutures.
Inventors
- 👤 Edgar Menezes
- 👤 Peter Steinheuser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:49
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/28; D01F6/30; A; A61; A61L; A61L17/00; A61L17/04; D01F6/02; D01F6/04; D01F6/06; C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/14; C08L23/142; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A sterile surgical monofilament suture comprising an ethylene-propylene copolymer, said copolymer containing a small amount of copolymerized ethylene, the balance being copolymerized propylene, said copolymerized ethylene being present in an amount sufficient to impart a significant reduction in Young's Modulus to the suture compared with a comparable propylene homopolymer suture, wherein said copolymer is a block copolymer containing from about 2 to about 15 weight percent polymerized ethylene.
Claim 2
Dependent Claim
68 words
A sterile surgical monofilament suture comprising an ethylene-propylene copolymer, said copolymer containing a small amount of copolymerized ethylene, the balance being copolymerized propylene, said copolymerized ethylene being present in an amount sufficient to impart a significant reduction in Young's Modulus to the suture compared with a comparable propylene homopolymer suture, wherein said copolymer is a block copolymer containing from about 2 to about 15 weight percent polymerized ethylene.
Claim 3
Dependent Claim
26 words
The sterile suture of claim 1 wherein said copolymer has a melt flow determined by ASTM D-1238, condition L, of from about 0.5 to about 7.
Claim 4
Dependent Claim
18 words
The sterile suture of claim 2 wherein the copolymer has a melt flow of less than about 3.
Claim 5
Dependent Claim
41 words
The sterile suture of claim 2 wherein said suture has the following properties: TABLE III
______________________________________
Tensile strength, psi
40,000 to 110,000
Knot strength, psi
30,000 to 90,000
Break elongation, %
25 to 110
Young's Modulus, psi
100,000 to 400,000
______________________________________
Claim 6
Dependent Claim
41 words
The sterile suture of claim 3 wherein said suture has the following properties: TABLE III
______________________________________
Tensile strength, psi
40,000 to 110,000
Knot strength, psi
30,000 to 90,000
Break elongation, %
25 to 110
Young's Modulus, psi
100,000 to 400,000
______________________________________
Claim 7
Dependent Claim
14 words
A sterile needled suture comprising the suture of claim 1 attached to a needle.
References Cited (Backward Citations)
US4520822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |