US3630205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene monofilament sutures
Assignee: Ethicon Inc
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Filing: 1969-07-31
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Granted: 1971-12-28
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Expires: 1989-07-31
Abstract
Abstract A flexible, uniform monofilament of isotatic polypropylene having an improved hand and an ultimate elongation greater than 35 percent is prepared by extruding isotatic polypropylene having a weight average molecular weight between 299,000 and 316,000 to form a monofilament, stretching said monofilament at 300* F. to about 6.6 times its original length, and subsequently permitting the stretched monofilament to contract to between 91 percent and 76 percent of its stretched length.
Inventors
- 👤 Gregory J Listner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:04
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/14; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; D; D01; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06; C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10T; Y10T442/00; Y10T442/60; Y10T442/682; Y10T442/684; Y10T442/688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A needled surgical suture comprising an isotactic polypropylene suture attached to a surgical needle, said needle and said suture being sterile, said isotactic polypropylene having approximately the following characteristics: Weight Average Molecular Weight about 294,000 to about 316,000 Number Average Molecular Weight about 78,400 to about 82,100 Tensile Strength 3.9 to 8.9 grams/denier denier Knot Strength 3.3 to 7.9 grams/denier Break Elongation 36% to 62% Young''s Modulus about 3.13 X 105 p.s.i. to about 5.23 X 105 p.s.i.
Claim 2
Dependent Claim
69 words
A surgical suture package comprising a sterile enclosure and therein a sterile needled surgical suture comprising an isotactic polypropylene suture attached to the surgical needle, said isotactic polypropylene having approximately the following characteristics: Weight Average Molecular Weightabout 294,000 toabout 316, 000Number Average Molecular Weightabout 78,400 toabout 82, 100Tensile Strength3.9 to 8.9 grams/denierKnot Strength3.3 to 7.9 grams/denierBreak Elongation36% to 62%Young''s Modulusabout 3.13 X 105 p.s.i. toabout 5.23 X 105 p.s.i.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |