US4672956A
Expired / Lapsed
US
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Bandages, components thereof and use
Assignee: BSN Medical Inc
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Filing: 1983-05-06
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Granted: 1987-06-16
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Expires: 2003-05-06
Abstract
Abstract An orthopaedic bandage is described which comprises a support carrying a vinyl compound, which compound polymerizes when exposed to a water-activated vinyl polymerization catalyst, characterized in that the vinyl compound is a hydrophilic prepolymer which contains not less than two polymerizable vinyl groups. Use of a hydrophilic prepolymer which contains not less than two polymerizable vinylic groups results in a storage stable bandage which on exposure to a water activated polymerization catalyst produces a cast of good strength.
Inventors
- 👤 William D. Potter
- 👤 Sinan B. Kiamil
- 👤 Nicholas D. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:49
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/672; A; A61; A61F; A61F13/00; A61F13/02; A61F13/023; A61L; A61L15/00; A61L15/07; A61L15/16; A61L15/42; C08F; C08F299/00; C08F299/02; C08F299/022; C08F299/06; C08G18/2805; C08G18/2815; C08G18/283; C08G18/285; C08G18/2875; A61F13/15; A61F13/53; A61F13/534; A61F13/539; A61F2013/530802; A61F2013/53445; A61F2013/5395; C08G2210/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172; Y10T442/178; Y10T442/20; Y10T442/2861
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
178 words
An orthopaedic bandage which comprises a support carrying a vinyl compound, which compound polymerises when exposed to a water-activated vinyl polymerisation catalyst, in which the vinyl compound is a hydrophilic prepolymer which contains not less than two polymerisable vinyl groups said prepolymer comprising (a) a vinylic component of the formula: ##STR4## wherein R 1 is hydrogen or methyl; X is O or NH and R 2 is selected from the group consisting of hydroxyalkyl, hydroxyaryl, aminoalkyl, aminoaryl and aminoaryl substituted at the nitrogen by alkyl; (b) a hydrophilic components selected from the group consisting of a polyoxyalklated vinyl compound and a compound containing a moiety of the formula: ##STR5## wherein n is 10 to 255; R 3 is hydrogen or methyl; R 4 is a bond, hydrogen or lower alkyl and R 3 is the same or different in adjacent repeat units with the proviso that at least 50% of the units, R 3 is hydrogen and (c) a polyfunctional organic compound capable of forming ester, ether, amide or urethane linkages with the components of (a) and (b).
Claim 2
Dependent Claim
178 words
An orthopaedic bandage which comprises a support carrying a vinyl compound, which compound polymerises when exposed to a water-activated vinyl polymerisation catalyst, in which the vinyl compound is a hydrophilic prepolymer which contains not less than two polymerisable vinyl groups said prepolymer comprising (a) a vinylic component of the formula: ##STR4## wherein R 1 is hydrogen or methyl; X is O or NH and R 2 is selected from the group consisting of hydroxyalkyl, hydroxyaryl, aminoalkyl, aminoaryl and aminoaryl substituted at the nitrogen by alkyl; (b) a hydrophilic components selected from the group consisting of a polyoxyalklated vinyl compound and a compound containing a moiety of the formula: ##STR5## wherein n is 10 to 255; R 3 is hydrogen or methyl; R 4 is a bond, hydrogen or lower alkyl and R 3 is the same or different in adjacent repeat units with the proviso that at least 50% of the units, R 3 is hydrogen and (c) a polyfunctional organic compound capable of forming ester, ether, amide or urethane linkages with the components of (a) and (b).
Claim 3
Dependent Claim
29 words
A bandage according to claim 1 in which the polymerisable vinyl groups are acrylate or methacrylate groups and the prepolymer is mixed with a water activated acrylic polymerisation catalyst.
Claim 4
Dependent Claim
28 words
A bandage according to claim 1 in which the prepolymer contains not less than three acrylic ester or methacrylic ester groups and said prepolymer is a viscous liquid.
Claim 5
Dependent Claim
32 words
A bandage according to claim 1 in which the prepolymer is water swellable to the extent of being able to absorb at least 10% by weight of its own weight of water.
Claim 6
Dependent Claim
14 words
A bandage according to claim 1 in which the prepolymer is dispersible in water.
Claim 7
Dependent Claim
15 words
A bandage according to claim 1 in which the prepolymer contains a tertiary amino group.
Claim 8
Dependent Claim
16 words
A bandage according to claim 6 in which the tertiary amino group is a dimethylaminoethyl group.
Claim 9
Dependent Claim
19 words
A bandage according to claim 1 in which the prepolymer contains 6 to 40% by weight of polyethylene oxide.
Claim 10
Dependent Claim
19 words
A bandage according to claim 2 in which the prepolymer contains acryloyloxy lower alkoxy or methacryloyloxy lower alkoxy groups.
Claim 11
Dependent Claim
13 words
A bandage according to claim 9 in which the prepolymer contains methacryloyloxyethyloxy groups.
Claim 12
Dependent Claim
27 words
A bandage according to claim 2 in which the polyfunctional organic compound forms a urethane linkage and comprises an aliphatic isocyanate functionality of not less than 2.
Claim 13
Dependent Claim
15 words
A bandage according to claim 11 in which the isocyanate has a functionality of 3.
Claim 14
Dependent Claim
22 words
A bandage according to claim 2 in which the prepolymer has an average molecular weight in the range of 1100 to 16,000.
Claim 15
Dependent Claim
19 words
A bandage according to claim 2 in which the catalyst comprises a copper (II) compound and a reducing agent.
Claim 16
Dependent Claim
14 words
A bandage according to claim 14 in which the reducing agent is sodium metabisulphite.
Claim 17
Dependent Claim
16 words
A bandage according to claim 15 in which the copper compound is copper (II) acetyl acetonate.
Claim 18
Dependent Claim
16 words
A bandage according to claim 14 in which the bandage additionally contains a polybasic organic acid.
Claim 19
Dependent Claim
12 words
A bandage according to claim 17 wherein the acid is tartaric acid.
Claim 20
Dependent Claim
52 words
A process for the preparation of an orthopaedic bandage according to claim 1 which process comprises coating or impregnating a support with a hydrophilic prepolymer of claim 1 which polymerises when exposed to a water-activated polymerisation catalyst, the catalyst or at least one component thereof being uniformly dispersed in the hydrophilic prepolymer.
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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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |