US5066772A
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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: 1990-01-18
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Granted: 1991-11-19
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Expires: 2010-01-18
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 20:21
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
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
69 words
A medical device formed totally or in part of one or more random 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.
Claim 2
Dependent Claim
69 words
A medical device formed totally or in part of one or more random 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.
Claim 3
Dependent Claim
14 words
A medical device according to claim 1 wherein n is 1 to about 3.
Claim 4
Dependent Claim
11 words
A medical device according to claim 2 wherein n is 1.
Claim 5
Dependent Claim
23 words
A medical device according to claim 1 wherein R 1 and R 2 are the same or different and are hydrogen or alkyl.
Claim 6
Dependent Claim
31 words
A medical device according to claim 4 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 7
Dependent Claim
21 words
A medical device according to claim 5 wherein the recurring monomeric units of the Structure II are derived from a lactide.
Claim 8
Dependent Claim
23 words
A medical device according to claim 6 wherein the recurring monomeric units of the Structure II are derived from d-lactide, 1-lactide or d,1-lactide.
Claim 9
Dependent Claim
38 words
A medical device 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 10
Dependent Claim
17 words
A medical device according to claim 8 wherein said amount is at least about 85 wt %.
Claim 11
Dependent Claim
20 words
A medical device according to claim 9 wherein said amount is from about 85 % to about 99 wt %.
Claim 12
Dependent Claim
21 words
A medical device according to claim 10 wherein said amount is from about 90 wt % to about 99 wt %.
Claim 13
Dependent Claim
15 words
A medical device according to claim 1 wherein said device further comprises a biodurable portion.
Claim 14
Dependent Claim
19 words
A medical device according to claim 12 wherein said copolymer coats all or a portion of said biodurable portion.
Claim 15
Dependent Claim
16 words
A medical device according to claim 1 which further comprise one or more other bioresorbable polymers.
Claim 16
Dependent Claim
19 words
A medical device according to claim 14 wherein said copolymer coats all or a portion of said bioresorbable polymer.
Claim 17
Dependent Claim
12 words
A medical device according to claim 1 which is a vascular graft.
Claim 18
Dependent Claim
15 words
A medical device according to claim 1 which is a wound closing or covering device.
Claim 19
Dependent Claim
12 words
A medical device according to claim 1 which is a nerve channel.
Claim 20
Dependent Claim
57 words
A random copolymer having at least one type of recurring monomeric unit of the 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.
Claim 21
Dependent Claim
57 words
A random copolymer having at least one type of recurring monomeric unit of the 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.
Claim 22
Dependent Claim
14 words
A random copolymer according to claim 19 wherein n is 1 to about 3.
Claim 23
Dependent Claim
11 words
A random copolymer according to claim 20 wherein n is 1.
Claim 24
Dependent Claim
23 words
A random copolymer according to claim 19 wherein R 1 and R 2 are the same or different and are hydrogen or alkyl.
Claim 25
Dependent Claim
31 words
A random copolymer according to claim 22 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 26
Dependent Claim
21 words
A random copolymer according to claim 23 wherein the recurring monomeric units of the Structure II are derived from a lactide.
Claim 27
Dependent Claim
23 words
A random copolymer according to claim 24 wherein the recurring monomeric units of the Structure II are derived from d-lactide, 1-lactide or d,1-lactide.
Claim 28
Dependent Claim
38 words
A random copolymer according to claim 19 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 29
Dependent Claim
17 words
A random copolymer according to claim 26 wherein said amount is at least about 85 wt. %.
Claim 30
Dependent Claim
21 words
A random copolymer according to claim 27 wherein said amount is from about 85 wt. % to about 99 wt. %.
Claim 31
Dependent Claim
21 words
A random copolymer according to claim 28 wherein said amount is from about 90 wt. % to about 99 wt. %.
Claim 32
Dependent Claim
39 words
The device of claim 1 wherein the amount of recurring monomeric units of the structure I in said copolymer is more than about 50 weight % based on the total weight of all recurring monomeric units in the copolymer.
Claim 33
Dependent Claim
39 words
The device of claim 1 wherein the amount of recurring monomeric units of the Structure II in said copolymer is more than about 50 weight % based on the total weight of all recurring monomeric units in said copolymer.
Claim 34
Dependent Claim
37 words
The device according to claim 31 wherein the amount of the recurring monomeric units of the Structure II in said copolymer is at least bout 75 wt. % based on the total weight of recurring monomer units.
Claim 35
Dependent Claim
16 words
The device according to claim 32 wherein said amount is at least about 85 wt. %.
Claim 36
Dependent Claim
20 words
The device according to claim 33 wherein said amount is from about 85 wt. % to about 99 wt. %.
Claim 37
Dependent Claim
20 words
The device according to claim 34 wherein said amount is from about 90 wt. % to about 99 wt. %.
Claim 38
Dependent Claim
19 words
The device of claim 1 wherein at least one of R 1 and R 2 is other than hydrogen.
Claim 39
Dependent Claim
18 words
The device of claim 36 wherein: n is 1; R 1 is hydrogen; and R 2 is methyl.
Claim 40
Dependent Claim
20 words
The random copolymer of claim 19 wherein at least one of R 1 and R 2 is other than hydrogen.
Claim 41
Dependent Claim
19 words
The random copolymer of claim 38 wherein: n is 1; R 1 is hydrogen; and R 2 is methyl.
Claim 42
Dependent Claim
41 words
The random copolymer of claim 19 wherein the amount of recurring monomeric units of the structure I in said copolymer is more than about b 50 weight % based on the total weight of all recurring monomeric units in the copolymer.
Claim 43
Dependent Claim
38 words
The random copolymer of claim 19 wherein the amount of recurring monomeric units of Structure II in said copolymer is more than 50 weight % based on the total weight of all recurring monomeric units in the copolymer.
Claim 44
Dependent Claim
38 words
A random copolymer according to claim 41 wherein the amount of the recurring monomeric units of the Structure II in said copolymer is at least about 75 wt. % based on the total weight of recurring monomer units.
Claim 45
Dependent Claim
17 words
A random copolymer according to claim 42 wherein said amount is at least about 85 wt. %.
Claim 46
Dependent Claim
21 words
A random copolymer according to claim 43 wherein said amount is from about 85 wt. % to about 99 wt. %.
Claim 47
Dependent Claim
19 words
A random copolymer according to claim 44 wherein said amount is from about 90 wt. % to about 99.%.
Claim 48
Dependent Claim
18 words
A device according to claim 1 wherein: n is 1; and R 1 and R 2 are hydrogen.
Claim 49
Dependent Claim
18 words
A random copolymer of claim 19 wherein: n is 1; and R 1 and R 2 are hydrogen.
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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) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |