Patent US4331277A successfully refreshed from Google Patents.
Patent US5185408A successfully refreshed from Google Patents.
US5185408A
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Medical devices fabricated totally or in part from copolymers of recurring units derived from cyclic carbonates and lactides
Assignee: United States Surgical Corp
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Filing: 1991-11-18
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Granted: 1993-02-09
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Expires: 2011-11-18
Abstract
Abstract This invention relates to novel copolymers containing carbonate repeat units and ester repeat units.
Inventors
- 👤 Reginald T. Tang
- 👤 Frank Mares
- 👤 William J. Boyle, Jr.
- 👤 Tin-Ho Chiu
- 👤 Kundan M. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:13
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/14; A61L27/18; A61L15/00; A61L15/16; A61L15/42; A61L15/64; A61L17/00; A61L17/06; A61L17/10; A61L31/00; A61L31/04; A61L31/06; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/1366; Y10T428/1386; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
102 words
A prosthetic tubular graft for surgical implantation in animals comprising a tube which is formed totally or in part of one or more copolymers having at least one type of recurring monomeric unit of the General Structure I: ##STR7## and having at least one type of recurring monomeric unit of the Structure II: ##STR8## wherein: n is from 1 to about 8; and R 1 and R 2 are the same or different and are hydrogen, alkyl or phenyl with the proviso that when said copolymers are block copolymers at least one of R 1 and R 2 is other than hydrogen.
Claim 2
Dependent Claim
102 words
A prosthetic tubular graft for surgical implantation in animals comprising a tube which is formed totally or in part of one or more copolymers having at least one type of recurring monomeric unit of the General Structure I: ##STR7## and having at least one type of recurring monomeric unit of the Structure II: ##STR8## wherein: n is from 1 to about 8; and R 1 and R 2 are the same or different and are hydrogen, alkyl or phenyl with the proviso that when said copolymers are block copolymers at least one of R 1 and R 2 is other than hydrogen.
Claim 3
Dependent Claim
15 words
A prosthetic tubular graft according to claim 1 wherein n is 1 to about 3.
Claim 4
Dependent Claim
24 words
A prosthetic tubular graft according to claim 1 wherein R 1 and R 2 are the same or different and are hydrogen or alkyl.
Claim 5
Dependent Claim
32 words
A prosthetic tubular graft according to claim 3 wherein R 1 and R 2 are the same or different and are hydrogen or alkyl having from 1 to about 4 carbon atoms.
Claim 6
Dependent Claim
22 words
A prosthetic tubular graft according to claim 4 wherein the recurring monomeric units of the Structure II are derived from a lactide.
Claim 7
Dependent Claim
24 words
A prosthetic tubular graft according to claim 5 wherein the recurring monomeric units of the Structure II are derived from d-lactide, l-lactide or d,l-lactide.
Claim 8
Dependent Claim
39 words
A prosthetic tubular graft according to claim 1 wherein the amount of the recurring monomeric units of the Structure I in said copolymer is at least about 75 wt. % based on the total weight of recurring monomer units.
Claim 9
Dependent Claim
18 words
A prosthetic tubular graft according to claim 7 wherein said amount is at least about 85 wt %.
Claim 10
Dependent Claim
22 words
A prosthetic tubular graft according to claim 8 wherein said amount is from about 85 wt % to about 99 wt %.
Claim 11
Dependent Claim
22 words
A prosthetic tubular graft according to claim 9 wherein said amount is from about 90 wt % to about 99 wt %.
Claim 12
Dependent Claim
15 words
A prosthetic tubular graft according to claim 1 wherein said copolymer is a random copolymer.
Claim 13
Dependent Claim
15 words
A prosthetic tubular graft according to claim 1 wherein said copolymer is a block copolymer.
Claim 14
Dependent Claim
120 words
A prosthetic tubular graft according to claim 12 wherein said block copolymer has an AB or an ABA structure wherein A is a block of recurring monomeric units of the Structure I or of the Structure II, and B is a block of recurring monomeric units of the Structure I, the Structure II or a random block of recurring units of the Structure I and II, with the proviso that when A is composed of units of the Structure I, B is composed of units of the Structure II or is a random block, and that when A is composed of units of the Structure II, B is composed of units of the Structure I or is a random block.
Claim 15
Dependent Claim
20 words
A prosthetic tubular graft according to claim 13 wherein said block copolymer is a block copolymer of the structure ABA.
Claim 16
Dependent Claim
21 words
A prosthetic tubular graft according to claim 1 wherein said graft is fabricated wholly from one or more of said copolymers.
Claim 17
Dependent Claim
42 words
A prosthetic tubular graft according to claim 1 wherein said tube is an extruded tube formed of one or more of said copolymers or is a non-woven or woven fabric tube formed of fibers formed from one or more of said copolymers.
Claim 18
Dependent Claim
21 words
A prosthetic tubular graft according to claim 1 wherein said graft is formed partially from one or more of said copolymers.
Claim 19
Dependent Claim
38 words
A prosthetic tubular graft according to claim 17 wherein said graft comprises a tube coated with one or more of said copolymers, said tube formed from a biodurable polymeric material or bioresorable polymeric material other than said copolymer.
Claim 20
Dependent Claim
23 words
A prosthetic tubular graft according to claim 18 wherein said tube is an extruded tube or is a woven or non-woven fabric tube.
Claim 21
Dependent Claim
18 words
A prosthetic tubular graft according to claim 19 wherein said tube is formed of a biodurable polymeric material.
Claim 22
Dependent Claim
18 words
A prosthetic tubular graft according to claim 13 wherein said tube is formed of a bioresorbable polymeric material.
Claim 23
Dependent Claim
128 words
A prosthetic tubular graft for surgical implantation in animals selected from the group consisting of vascular grafts, nerve channels, and wound closing or covering devices comprising a tube which is formed totally or in part of one or more copolymers having at least one type of recurring monomeric unit of the General Structure I: ##STR9## and having at least one type of recurring monomeric unit of the Structure II: ##STR10## wherein: n is from 1 to about 8; and R 1 and R 2 are the same or different and are hydrogen, alkyl or phenyl with the proviso that when said copolymers are block phenyl with the proviso that when said copolymers are block copolymers at least one of R 1 and R 2 is other than hydrogen.
Claim 24
Dependent Claim
128 words
A prosthetic tubular graft for surgical implantation in animals selected from the group consisting of vascular grafts, nerve channels, and wound closing or covering devices comprising a tube which is formed totally or in part of one or more copolymers having at least one type of recurring monomeric unit of the General Structure I: ##STR9## and having at least one type of recurring monomeric unit of the Structure II: ##STR10## wherein: n is from 1 to about 8; and R 1 and R 2 are the same or different and are hydrogen, alkyl or phenyl with the proviso that when said copolymers are block phenyl with the proviso that when said copolymers are block copolymers at least one of R 1 and R 2 is other than hydrogen.
Claim 25
Dependent Claim
21 words
A prosthetic tubular graft according to claim 22 wherein the recurring monomeric units of the Structure II are derived from lactide.
Claim 26
Dependent Claim
37 words
A prosthetic tubular graft according to claim 23 wherein the amount of recurring units of the Structure II in said copolymer is at least about 75 wt % based on the total weight of recurring monomeric units.
Claim 27
Dependent Claim
13 words
A prosthetic tubular graft according to claim 24 which is a vascular graft.
Claim 28
Dependent Claim
16 words
A prosthetic tubular graft according to claim 24 which is a wound closing or covering device.
Claim 29
Dependent Claim
13 words
A prosthetic tubular graft according to claim 24 which is a nerve channel.
References Cited (Backward Citations)
US4916193A
Cited
US5066772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-09 | 1996-08-10 | 1997-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-09 | 2000-08-10 | 2001-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-09 | 2004-08-10 | 2005-02-09 | $7700.00 | Window Closed / Lapsed |