US5236444A
Expired / Lapsed
US
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Absorbable polymers and surgical articles made therefrom
Assignee: United States Surgical Corp
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Filing: 1992-10-27
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Granted: 1993-08-17
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Expires: 2012-10-27
Abstract
Abstract Block copolymers have a first polymer block wherein glycolide is the predominant component and a second block having glycolide, lactide and trimethylene carbonate linkages. The copolymers are useful in forming surgical devices, including monofilament sutures.
Inventors
- 👤 Ross R. Muth
- 👤 Nagabhushanam Totakura
- 👤 Cheng-Kung Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L17/12; A61L31/00; A61L31/04; A61L31/06; C08G63/02; C08G63/06; C08G63/08
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
31 words
A block copolymer comprising: a) a first block formed from a polymer having glycolide as the predominant component thereof; and b) a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 2
Dependent Claim
31 words
A block copolymer comprising: a) a first block formed from a polymer having glycolide as the predominant component thereof; and b) a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 3
Dependent Claim
21 words
A copolymer as in claim 1 wherein said first block comprises glycolide in an amount greater than about 70 mole percent.
Claim 4
Dependent Claim
15 words
A copolymer as in claim 1 wherein said first block comprises a homopolymer of glycolide.
Claim 5
Dependent Claim
16 words
A copolymer as in claim 1 wherein said second block comprises lactide as the predominant component.
Claim 6
Dependent Claim
15 words
A copolymer as in claim 1 wherein said second block comprises about 80 percent lactide.
Claim 7
Dependent Claim
24 words
A copolymer as in claim 1 wherein said first block comprises from about 10 to about 90 percent by weight of the block copolymer.
Claim 8
Dependent Claim
23 words
A copolymer as in claim 1 wherein said second block comprises from about 10 to about 90 percent by weight of the copolymer.
Claim 9
Dependent Claim
34 words
A copolymer as in claim 1 wherein said first block comprises about 85 percent by weight of the block copolymer and said second block comprises about 15 percent by weight of the block copolymer.
Claim 10
Dependent Claim
38 words
A surgical article comprising one or more fibers made from a block copolymer having a first block comprising a polymer having glycolide as the predominant component thereof and a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 11
Dependent Claim
38 words
A surgical article comprising one or more fibers made from a block copolymer having a first block comprising a polymer having glycolide as the predominant component thereof and a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 12
Dependent Claim
22 words
A surgical article as in claim 9 wherein said first block comprises glycolide in an amount greater than about 70 mole percent.
Claim 13
Dependent Claim
16 words
A surgical article as in claim 9 wherein said first block comprises a homopolymer of glycolide.
Claim 14
Dependent Claim
17 words
A surgical article as in claim 9 wherein said second block comprises lactide as the predominant component.
Claim 15
Dependent Claim
16 words
A surgical article as in claim 9 wherein said second block comprises about 80 percent lactide.
Claim 16
Dependent Claim
25 words
A surgical article as in claim 9 wherein said first block comprises from about 10 to about 90 percent by weight of the block copolymer.
Claim 17
Dependent Claim
24 words
A surgical article as in claim 9 wherein said second block comprises from about 10 to about 90 percent by weight of the copolymer.
Claim 18
Dependent Claim
35 words
A surgical article as in claim 9 wherein said first block comprises about 85 percent by weight of the block copolymer and said second block comprises about 15 percent by weight of the block copolymer.
Claim 19
Dependent Claim
14 words
A surgical article as in claim 9 wherein said surgical element is a suture.
Claim 20
Dependent Claim
34 words
An absorbable surgical suture comprising a block copolymer having a first block formed from a polymer having glycolide as the predominant component thereof and a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 21
Dependent Claim
34 words
An absorbable surgical suture comprising a block copolymer having a first block formed from a polymer having glycolide as the predominant component thereof and a second block having glycolide, lactide and trimethylene carbonate linkages.
Claim 22
Dependent Claim
14 words
An absorbable suture as in claim 18 wherein said suture is a monofilament suture.
Claim 23
Dependent Claim
22 words
A method of closing a wound comprising suturing with a suture made at least in part from the copolymer of claim 1.
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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) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |