US4510295A
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Absorbable polymers of substituted benzoic acid
Assignee: Ethicon Inc
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Filing: 1983-01-20
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Granted: 1985-04-09
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Expires: 2003-01-20
Abstract
Abstract Absorbable, radiation sterilizable polymers, useful as sutures and other medical and surgical devices, are produced from polyesters of substituted benzoic acid, dihydric alcohols, and glycolide and/or lactide.
Inventors
- 👤 Rao S. Bezwada
- 👤 Shalaby W. Shalaby
- 👤 Dennis D. Jamiolkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; A; A61; A61L; A61L17/00; A61L17/06; A61L17/10; A61L27/00; A61L27/14; A61L27/18; C08G63/02; C08G63/60; C08G63/66
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
131 words
An absorbable, radiation sterilizable, normally solid polymer comprising a copolyester comprising the repeating divalent units of the formula: --O--CO--Ph--X--CHR--CO--O--, (A) --G--, (B) and --O--CO--CHR'-- (D) wherein Ph represents 1,2-, 1,3-, or 1,4-phenylene, or lower alkyl- or lower alkoxy-substituted phenylene, wherein R represents hydrogen, lower alkyl, phenyl, or benzyl, wherein X represents oxy, thio, or sulfonyl, wherein G represents the residue after removal of the alcohol groups of a dihydric alcohol, wherein R' represents hydrogen or methyl, and wherein said divalent units (A), (B), and (D) are bonded to each other through ester groups formed by linking said units, wherein the units (A) plus (B) are present in said polymer in an amount of from about 1 to about 70 parts by weight per 100 parts by weight of the units (D).
Claim 2
Dependent Claim
131 words
An absorbable, radiation sterilizable, normally solid polymer comprising a copolyester comprising the repeating divalent units of the formula: --O--CO--Ph--X--CHR--CO--O--, (A) --G--, (B) and --O--CO--CHR'-- (D) wherein Ph represents 1,2-, 1,3-, or 1,4-phenylene, or lower alkyl- or lower alkoxy-substituted phenylene, wherein R represents hydrogen, lower alkyl, phenyl, or benzyl, wherein X represents oxy, thio, or sulfonyl, wherein G represents the residue after removal of the alcohol groups of a dihydric alcohol, wherein R' represents hydrogen or methyl, and wherein said divalent units (A), (B), and (D) are bonded to each other through ester groups formed by linking said units, wherein the units (A) plus (B) are present in said polymer in an amount of from about 1 to about 70 parts by weight per 100 parts by weight of the units (D).
Claim 3
Dependent Claim
9 words
The polymer of claim 1 wherein Ph is 1,4-phenylene.
Claim 4
Dependent Claim
13 words
The polymer of claim 2 wherein X is oxy and R is hydrogen.
Claim 5
Dependent Claim
16 words
The polymer of claim 2 wherein G represents alkylene of from two to six carbon atoms.
Claim 6
Dependent Claim
16 words
The polymer of claim 3 wherein G represents alkylene of from two to six carbon atoms.
Claim 7
Dependent Claim
9 words
The polymer of claim 2 wherein G represents ethylene.
Claim 8
Dependent Claim
9 words
The polymer of claim 3 wherein G represents ethylene.
Claim 9
Dependent Claim
9 words
The polymer of claim 2 wherein R' represents hydrogen.
Claim 10
Dependent Claim
9 words
The polymer of claim 3 wherein R' represents hydrogen.
Claim 11
Dependent Claim
16 words
The polymer of claim 1 wherein said polymer comprises repeating divalent units of the formulas: ##STR7##
Claim 12
Dependent Claim
21 words
The polymer of claim 1 wherein the --O--CO--CHR'-- moiety constitutes from about 59 to about 99 weight percent of the polymer.
Claim 13
Dependent Claim
21 words
The polymer of claim 2 wherein the --O--CO--CHR'-- moiety constitutes from about 59 to about 99 weight percent of the polymer.
Claim 14
Dependent Claim
21 words
The polymer of claim 3 wherein the --O--CO--CHR'-- moiety constitutes from about 59 to about 99 weight percent of the polymer.
Claim 15
Dependent Claim
21 words
The polymer of claim 10 wherein the --O--CO--CHR'-- moiety constitutes from about 59 to about 99 weight percent of the polymer.
Claim 16
Dependent Claim
11 words
The polymer of claim 2 in the form of a fiber.
Claim 17
Dependent Claim
11 words
The polymer of claim 3 in the form of a fiber.
Claim 18
Dependent Claim
11 words
The polymer of claim 10 in the form of a fiber.
Claim 19
Dependent Claim
25 words
The polymer of claim 1 wherein said polymer additionally contains the divalent unit of the formula: --Ph--CO--O-- wherein Ph is as defined in claim 1.
Claim 20
Dependent Claim
62 words
The polymer of claim 1 wherein said polymer is the product of a reaction between (a) glycolide, lactide, or mixture thereof, and (b) a polyester comprising the repeating divalent unit of the formula: --(O--CO--Ph--X--CHR--CO--O----G---- wherein Ph, X, R, and G have the meanings set forth in claim 1, said reaction being carried out in the presence of an esterification or transesterification catalyst.
Claim 21
Dependent Claim
62 words
The polymer of claim 1 wherein said polymer is the product of a reaction between (a) glycolide, lactide, or mixture thereof, and (b) a polyester comprising the repeating divalent unit of the formula: --(O--CO--Ph--X--CHR--CO--O--Ph--CO--O------G---- wherein Ph, X, R, and G have the meanings set forth in claim 1, said reaction being carried out in the presence of an esterification or transesterification catalyst.
Claim 22
Dependent Claim
19 words
The polymer of claim 19 wherein Ph is 1,4-phenylene, X is oxy, R is hydrogen, and G is ethylene.
Claim 23
Dependent Claim
19 words
The polymer of claim 20 wherein Ph is 1,4-phenylene, X is oxy, R is hydrogen, and G is ethylene.
References Cited (Backward Citations)
US3056761A
Cited
US3033822A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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