US5431679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbable block copolymers and surgical articles fabricated therefrom
Assignee: United States Surgical Corp
•
Filing: 1994-03-10
•
Granted: 1995-07-11
•
Expires: 2014-03-10
Abstract
Abstract Block copolymers wherein one of the blocks is made from hard phase forming monomers and another of the blocks is made from soft phase forming monomers copolymerized with randomly intermingled units of other soft phase forming monomers. The copolymers are useful in forming surgical articles, including both monofilament and multifilament sutures.
Inventors
- 👤 Steven L. Bennett
- 👤 Cheng-Kung Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
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: 13
Claim 1
Independent Claim
73 words
A block copolymer comprising: a) from about 50 to about 65 percent by weight of copolymer blocks comprising a predominant amount of glycolic acid ester units; and b) the remainder of said blocks comprising random copolymers of caprolactone and 1,3 dioxane-2-one, said blocks comprising random copolymers of epsilon-caprolactone and 1,3 dioxane-2-one being formed from the random polymerization of about 35 percent by weight of caprolactone and about 65 percent by weight 1,3 dioxane-2-one.
Claim 2
Dependent Claim
73 words
A block copolymer comprising: a) from about 50 to about 65 percent by weight of copolymer blocks comprising a predominant amount of glycolic acid ester units; and b) the remainder of said blocks comprising random copolymers of caprolactone and 1,3 dioxane-2-one, said blocks comprising random copolymers of epsilon-caprolactone and 1,3 dioxane-2-one being formed from the random polymerization of about 35 percent by weight of caprolactone and about 65 percent by weight 1,3 dioxane-2-one.
Claim 3
Dependent Claim
14 words
The block copolymer of claim 1, wherein said block copolymer is a tri-block copolymer.
Claim 4
Dependent Claim
46 words
The tri-block copolymer of claim 2, comprising: a) about 50 to about 65 percent of said copolymer by weight end blocks, said end blocks comprising a predominant amount of glycolic acid ester units, and b) a center block comprising random copolymers of epsilon-caprolactone and 1,3 dioxane-2-one.
Claim 5
Dependent Claim
15 words
A surgical article formed totally or in part from the block copolymer of claim 1.
Claim 6
Dependent Claim
29 words
The surgical article of claim 4, wherein said surgical article is selected from the group consisting of clips, staples, sutures, pins, screws, prosthetic devices, anastomosis rings, and growth matrices.
Claim 7
Dependent Claim
13 words
The surgical article of claim 5, wherein said suture is a monofilament suture.
Claim 8
Dependent Claim
12 words
The surgical article of claim 4 further comprising a medico-surgically useful substance.
Claim 9
Dependent Claim
62 words
A block copolymer comprising: a) from about 40 to about 70 percent by weight of said copolymer blocks comprising a predominant amount of glycolic acid ester units; and b) the remainder of said blocks comprising random copolymers of caprolactone and 1,3 dioxane-2-one, said blocks comprising random copolymers of epsilon-caprolactone and 1,3 dioxane-2-one formed from the random polymerization of caprolactone and 1,3 dioxane-2-one.
Claim 10
Dependent Claim
62 words
A block copolymer comprising: a) from about 40 to about 70 percent by weight of said copolymer blocks comprising a predominant amount of glycolic acid ester units; and b) the remainder of said blocks comprising random copolymers of caprolactone and 1,3 dioxane-2-one, said blocks comprising random copolymers of epsilon-caprolactone and 1,3 dioxane-2-one formed from the random polymerization of caprolactone and 1,3 dioxane-2-one.
Claim 11
Dependent Claim
14 words
The block copolymer of claim 8, wherein said block copolymer is a tri-block copolymer.
Claim 12
Dependent Claim
15 words
A surgical article formed totally or in part from the block copolymer of claim 8.
Claim 13
Dependent Claim
29 words
The surgical article of claim 10, wherein said surgical article is selected from the group consisting of clips, staples, sutures, pins, screws, prosthetic devices, anastomosis rings, and growth matrices.
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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) | 1998-07-10 | 1999-01-09 | 1999-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-10 | 2003-01-09 | 2003-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-10 | 2007-01-09 | 2007-07-11 | $7700.00 | Window Closed / Lapsed |