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US5079093A
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Easily-slippery medical materials and a method for preparation thereof
Assignee: Toray Industries Inc
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Filing: 1989-08-09
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Granted: 1992-01-07
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Expires: 2009-08-09
Abstract
Abstract The present invention provides a medical material having an easily-slippery property and durability which the conventional technologies have never provided by fixing a hydrophilic polymer on the surface of a base material through strong covalent bondings and a method for preparation thereof.
Inventors
- 👤 Ryojiro Akashi
- 👤 Shoji Nagaoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:03
CPC Classifications
A; A61; A61L; A61L27/00; A61L29/00; A61L29/08; A61L29/085; A61L27/28; A61L27/34; A61L31/00; A61L31/08; A61L31/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
99 words
A slippery medical material wherein the surface of a base material coated with a component A is followed by a coating with a component B, wherein said component A comprises a polymer having at least one reactive functional group selected from the group consisting of an alkali metal alcoholate group, amino group, an alkali metal amide group, a carboxylic acid group, a sulfonic acid group, a magnesium halide group and a fluorinated boron complex group; and said component B comprises a hydrophilic polymer having a reactive heterocyclic group being reactive with the reactive functional group in the component A.
Claim 2
Dependent Claim
99 words
A slippery medical material wherein the surface of a base material coated with a component A is followed by a coating with a component B, wherein said component A comprises a polymer having at least one reactive functional group selected from the group consisting of an alkali metal alcoholate group, amino group, an alkali metal amide group, a carboxylic acid group, a sulfonic acid group, a magnesium halide group and a fluorinated boron complex group; and said component B comprises a hydrophilic polymer having a reactive heterocyclic group being reactive with the reactive functional group in the component A.
Claim 3
Dependent Claim
19 words
An easily-slippery medical material as described in claim 1 wherein the component A is a polymer having amino groups.
Claim 4
Dependent Claim
24 words
An easily-slippery medical material as described in claim 1 wherein the content of said reactive functional groups in the component A is 0.1-50 wt.%.
Claim 5
Dependent Claim
74 words
An easily-slippery medical material as described in claim 1 wherein the reactive heterocyclic group in the component B is at least one selected from the groups consisting of ethylene oxide group, propylene oxide group, ethylene sulfide group, propylene sulfide group, cyclooxabutane group, lactam and lactone groups of a 3 or 4 membered ring, amino acid-N-carboxylic acid anhydride group, oxazolidine group, ethylene-imine group, propylene-imine group, cyclic ether groups, cyclic azaether groups and cyclic thioether groups.
Claim 6
Dependent Claim
22 words
An easily-slippery medical material as described in claim 1 wherein the reactive heterocyclic group in the component B is ethylene oxide group.
Claim 7
Dependent Claim
24 words
An easily-slippery medical material as described in claim 1 wherein the content of the reactive heterocyclic group in the component B is 0.01-50 wt.%.
Claim 8
Dependent Claim
29 words
An easily-slippery medical material as described in claim 1 wherein the component B is a copolymer consisting of a monomer having a reactive heterocyclic group and a hydrophilic monomer.
Claim 9
Dependent Claim
29 words
An easily-slippery medical material as described in claim 7 wherein the hydrophilic monomer is at least one selected from the group consisting of (meth)acrylamide, N-vinylpyrrolidone and monomethoxytriethylene glycol mono(meth)acrylate.
Claim 10
Independent Claim
111 words
A method of preparing a slippery medical material comprising the steps of (1) applying to the surface of a base material a coating of component A, and thereafter (2) applying thereover a coating of component B, wherein said component A comprises a polymer having at least one reactive functional group selected from the group consisting of an alkali metal alcoholate group, an amino group, an alkali metal amide group, a carboxylic acid group, a sulfonic acid group, a magnesium halide group and a fluorinated boron complex group; and said component B comprises a hydrophilic polymer having a reactive heterocyclic group being reactive with the reactive functional group in the component A.
Claim 11
Independent Claim
111 words
A method of preparing a slippery medical material comprising the steps of (1) applying to the surface of a base material a coating of component A, and thereafter (2) applying thereover a coating of component B, wherein said component A comprises a polymer having at least one reactive functional group selected from the group consisting of an alkali metal alcoholate group, an amino group, an alkali metal amide group, a carboxylic acid group, a sulfonic acid group, a magnesium halide group and a fluorinated boron complex group; and said component B comprises a hydrophilic polymer having a reactive heterocyclic group being reactive with the reactive functional group in the component A.
Claim 12
Dependent Claim
54 words
A method for preparation of an easily-slippery medical material as described in claim 9 wherein the component A is a polymer having at least one reactive functional group selected among alkali metal alcoholate groups, amino groups, alkali metal amide groups, carboxylic acid group, sulfonic acid group, magnesium halide groups and fluorinated boron complex groups.
Claim 13
Dependent Claim
24 words
A method for preparation of an easily-slippery medical material as described in claim 9 wherein the component A is a polymer having amino groups.
Claim 14
Dependent Claim
30 words
A method for preparation of an easily slippery medical material as described in claim 9 wherein the content of said reactive functional groups in the component A is 0.1-50 wt.%.
Claim 15
Dependent Claim
78 words
A method for preparation of an easily-slippery medical material as described in claim 9 wherein the reactive heterocyclic group in the component B is at least one selected from the groups consisting of ethylene oxide group, propylene oxide group, ethylene sulfide group, propylene sulfide group, cyclooxabutane group, lactam and lactone groups of 3 or 4 membered ring, amino acid-N-carboxylic acid anhydride group, oxazolidine group, ethylene-imine group, propylene-imine group, cyclic ether groups, cyclic azaether groups and cyclic thioether groups.
Claim 16
Dependent Claim
27 words
A method for preparation of an easily-slippery medical material as described in claim 9 wherein the reactive heterocyclic group in the component B is ethylene oxide group.
Claim 17
Dependent Claim
34 words
A method for preparation of an easily-slippery medical material s described in claim 9 wherein the component B is a copolymer consisting of a monomer having a reactive heterocyclic group and a hydrophilic monomer.
Claim 18
Dependent Claim
34 words
A method for preparation of an easily-slippery medical material as described in claim 15 wherein the hydrophilic monomer is at least one selected from the group consisting of (meth)acrylamide, N-vinyl-pyrrolidone and monomethoxy-triethylene glycol mono(meth)acrylate.
Claim 19
Dependent Claim
31 words
A method for preparation of an easily-slippery medical material as described in claim 9 characterized by using a peroxide, an azo compound or a polymerizable polyfunctional monomer as a crosslinking agent.
Claim 20
Dependent Claim
30 words
A method for preparation of an easily-slippery medical material as described in claim 9 characterized by carrying out a heat-treatment after coating with the component A and the Component B.
Claim 21
Dependent Claim
27 words
A method for preparation of an easily-slippery medical material as described in claim 18 characterized by carrying out a heat-treatment at 30°-200° C. for 1 min-24 hr.
Claim 22
Dependent Claim
24 words
A method for preparation of an easily-slippery medical material as described in claim 18 characterized by carrying out a heat-treatment in an inert gas.
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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |