US5269807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suture fabricated from syndiotactic polypropylene
Assignee: United States Surgical Corp
•
Filing: 1992-08-27
•
Granted: 1993-12-14
•
Expires: 2012-08-27
Abstract
Abstract A suture is manufactured from a syndiotactic polypropylene, advantageously by a melt extrusion (spinning) procedure. The suture exhibits greater flexibility than a comparable suture manufactured from isotactic polypropylene.
Inventors
- 👤 Cheng-Kung Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:09
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06; A; A61; A61L; A61L17/00; A61L17/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
18 words
A medical device comprising a suture-needle combination comprising a filament spun from a composition containing a syndiotactic polypropylene.
Claim 2
Dependent Claim
18 words
A medical device comprising a suture-needle combination comprising a filament spun from a composition containing a syndiotactic polypropylene.
Claim 3
Dependent Claim
36 words
The medical device of claim 1 wherein the syndiotactic polypropylene possesses a weight average molecular weight of from about 15,000 to about 400,000 and a number average molecular weight of from about 4,000 to about 200,000.
Claim 4
Dependent Claim
36 words
The medical device of claim 1 wherein the syndiotactic polypropylene possesses a weight average molecular weight of from about 20,000 to about 300,000 and a number average molecular weight of from about 5,000 to about 150,000.
Claim 5
Dependent Claim
25 words
The medical device of claim 1 wherein the syndiotactic polypropylene possesses a melt flow index in g/10 min of from about 2 to about 20.
Claim 6
Dependent Claim
25 words
The medical device of claim 1 wherein the syndiotactic polypropylene possesses a melt flow index in g/10 min of from about 3 to about 5.
Claim 7
Dependent Claim
22 words
The medical device of claim 1 wherein the syndiotactic polypropylene is present in a blend with at least one other thermoplastic polymer.
Claim 8
Dependent Claim
32 words
The medical device of claim 6 wherein the blend contains from about 5 to about 95 weight percent syndiotactic polypropylene, the balance of the blend containing the other thermoplastic polymer or polymers.
Claim 9
Dependent Claim
31 words
The medical device of claim 6 wherein the blend contains from about 20 to 80 weight percent syndiotactic polypropylene, the balance of the blend containing the other thermoplastic polymer or polymers.
Claim 10
Dependent Claim
22 words
The medical device of claim 1 wherein the syndiotactic polypropylene is present in a blend with isotactic polypropylene, stactic polypropylene or both.
Claim 11
Dependent Claim
32 words
The medical device of claim 9 wherein the blend contains from about 5 to about 95 weight percent syndiotactic polypropylene, the balance of the blend containing isotactic polypropylene, atactic polypropylene or both.
Claim 12
Dependent Claim
32 words
The medical device of claim 9 wherein the blend contains from about 20 to about 80 weight percent syndiotactic polypropylene, the balance of the blend containing isotactic polypropylene, atactic polypropylene or both.
Claim 13
Independent Claim
43 words
A method of suturing tissue comprising: providing a suture-needle combination wherein said suture comprises a filament spun from a composition containing a syndiotactic polypropylene; piercing tissue with said needle of said suture-needle combination; and drawing said suture at least partially through the tissue.
Claim 14
Independent Claim
43 words
A method of suturing tissue comprising: providing a suture-needle combination wherein said suture comprises a filament spun from a composition containing a syndiotactic polypropylene; piercing tissue with said needle of said suture-needle combination; and drawing said suture at least partially through the tissue.
References Cited (Backward Citations)
US3258455A
Cited
US3305538A
Cited
US3268627A
Cited
US3364190A
Cited
US3511824A
Cited
US3630205A
Cited
US4543286A
Cited
US4620542A
Cited
US4911165A
Cited
US4557264A
Cited
US4621638A
Cited
US4892851A
Cited
US5132381A
Cited
US5200131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |