Patent US4792599A successfully refreshed from Google Patents.
US4792599A
Expired / Lapsed
US
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Biocompatible polyesters
Assignee: Abbott Vascular Devices Ltd
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Filing: 1987-07-28
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Granted: 1988-12-20
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Expires: 2007-07-28
Abstract
Abstract A biocompatible polyester comprising repeating units derived from glycerophosphorylcholine or glycerophosphorylethanolamine and at least one di- or poly-functional acid or reactive derivative thereof is haemocompatible and may be used in components for handling body fluids and in prostheses.
Inventors
- 👤 Aziz A. Durrani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:42
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/692; A; A61; A61L; A61L27/00; A61L27/14; A61L27/18; Y; Y10; Y10S; Y10S528/00; Y10S528/92; Y10S623/00; Y10S623/924
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
23 words
A biocompatible polyester comprising repeating units derived from glycerophosphorylcholine or glycerophosphorylethanolamine and at least one di- or poly-functional acid or reactive derivative thereof.
Claim 2
Dependent Claim
23 words
A biocompatible polyester comprising repeating units derived from glycerophosphorylcholine or glycerophosphorylethanolamine and at least one di- or poly-functional acid or reactive derivative thereof.
Claim 3
Dependent Claim
46 words
A polyester according to claim 1 comprising repeating units of formula (II) ##STR4## wherein --A-- is straight or branched C 1-15 alkylene or straight or branched C 2-15 alkenylene and ○P is a phosphate head group of formula (III) ##STR5## wherein R is methyl or hydrogen.
Claim 4
Dependent Claim
49 words
A polyester according to claim 1 comprising repeating units derived from 1 or more of isophthaloyl chloride, phthaloyl chloride, benzene 1,3,5-triacid chloride, benzene 1,2,4-tricarboxylic acid chloride, adipoyl chloride, fumaryl chloride, malonyl chloride, isophthalic acid, phthalic acid, benzene 1,3,5-tricarboxylic acid, benzene 1,2,4-tricarboxylic acid, adipic acid, fumaric acid and malonic acid.
Claim 5
Dependent Claim
15 words
A polyester according to claim 1 further comprising repeating units derived from a di-hydric alcohol.
Claim 6
Dependent Claim
28 words
A polyester according to claim 4 further comprising repeating units derived from ethylene glycol, 1,2-propanediol, 1,2-butane diol, 1,4-butane diol, 2,5-hexane diol, 1,6-hexane diol, 1,7-heptanediol, 1,8-Octane diol or glycerol.
Claim 7
Dependent Claim
13 words
A polyester according to claim 5 wherein the di-hydric alcohol is ethylene glycol.
Claim 8
Dependent Claim
15 words
A polyester according to claim 4 wherein the di-hydric alcohol is a long chain diol.
Claim 9
Dependent Claim
18 words
A polyester according to claim 1 comprising repeating units derived from glycerophosphorylcholine and repeating units derived from glycerophosphorylethanolamine.
Claim 10
Dependent Claim
23 words
A polyester according to claim 8, comprising repeating units derived from glycerophosphorylcholine and glycerophosphorylethanolamine in a molar ratio of from 99:1 to 50:50.
Claim 11
Dependent Claim
21 words
A polyester according to claim 8, comprising repeating units derived from glycerophosphorylcholine and glycerophosphorylethanolamine in a molar ratio of about 80:20.
Claim 12
Dependent Claim
35 words
A polyester material comprising a physical admixture of a polyester according to claim 1 having repeating units derived from glycerophosphoryl choline and a polyester according to claim 1 having repeating units derived from glycerophosphoryl ethanolamine.
Claim 13
Dependent Claim
27 words
A process for producing a polyester according to claim 1 comprising reacting glycerophosphorylcholine or glycerophosphorylethanolamine with at least one di- or poly-functional acid or reactive derivative thereof.
Claim 14
Dependent Claim
27 words
A process according to claim 12 comprising reacting glycerophosphorylcholine or glycerophosphorylethanolamine with a di- or poly-carboxylic acid or an acid halide of a di- or poly-carboxylic acid.
Claim 15
Dependent Claim
27 words
A process according to claim 13 comprising reacting glycerophosphorylcholine or glycerophosphorylethanolamine with a di- or tri-alkanoic acid or the acid halide of a di- or tri-alkanoic acid.
Claim 16
Dependent Claim
14 words
A process according to claim 13 wherein the acid halide is an acid chloride.
Claim 17
Dependent Claim
19 words
A haemocompatible article having a polyester according to claim 1 on at least a part of the surface thereof.
Claim 18
Dependent Claim
11 words
A haemocompatible article formed of a polyester according to claim 1.
Claim 19
Dependent Claim
18 words
A haemocompatible article having a polyester according to claim 11 on at least part of the surface thereof.
Claim 20
Dependent Claim
11 words
A haemocompatible article formed of a polyester according to claim 11.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |