Patent US909789A successfully refreshed from Google Patents.
US3874376A
Expired / Lapsed
US
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Photocurable resin impregnated fabric for forming rigid orthopaedic devices and method
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-11-17
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Granted: 1975-04-01
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Expires: 1992-11-17
Abstract
Abstract A fabric article, for example a bandage, suitable for applying to a body member, the fabric article being impregnated with at least one curable organic material, for example, a material consisting of or containing a polymerizable ethylenically unsaturated material, and at least one photosensitive catalyst comprising at least one photosensitizer activatable by visible light, the photosensitive catalyst being capable of curing the organic material so as to convert the impregnated fabric article into an immobilizing orthopaedic device upon exposure of the impregnated fabric article to visible light.
Inventors
- 👤 Edward Charles Dart
- 👤 Antony Robert Perry
- 👤 Josef Nemcek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:07
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/18; A; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07; C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
117 words
IN AN ORTHOPAEDIC DEVICE FORMING FABRIC IMPREGNATED WITH AT LEAST ONE CURABLE MATERIAL, THE IMPROVEMENT WHEREIN THE CURABLE MATERIAL COMPRISES AT LEAST ONE CURABLE ORGANIC MATERIAL COMPRISING A COPOLYMERIZZABLE MIXTURE OF AN ETHYLENICALLY UNSATURATED POLYMER AND AN ETHYLENICALLY UNSATURATED MONOMER AND AT LEAST ONE PHOTOSENSITIVE CATALYST COMPRISING AT LEAST ONE PHOTOSENSITIZER ACTIVATABLE BY VISIBLE LIGHT HAVING A WAVELENGTH IN THE RANGE 4,000 A TO 7,500 A, AND AT LEAST ONE REDUCING AGENT CAPABLE OF REDUCING THE PHOTOSENSITIZER WHEN THE PHOTOSENSITIZER IS IN AN ACTIVATED STATE, THE PHOTOSENSITIVE CATALYST BEING CAPABLE OF CURING THE ORGANIC MATERIAL TO CONVERT THE IMPREGNATED FABRIC ARTICLE INTO AN IMMOBILIZING ORTHOPAEDIC DEVICE UPON EXPOSURE OF THE IMPREGNATED FABRIC ARTICLE TO SAID VISIBLE LIGHT.
Claim 2
Dependent Claim
117 words
IN AN ORTHOPAEDIC DEVICE FORMING FABRIC IMPREGNATED WITH AT LEAST ONE CURABLE MATERIAL, THE IMPROVEMENT WHEREIN THE CURABLE MATERIAL COMPRISES AT LEAST ONE CURABLE ORGANIC MATERIAL COMPRISING A COPOLYMERIZZABLE MIXTURE OF AN ETHYLENICALLY UNSATURATED POLYMER AND AN ETHYLENICALLY UNSATURATED MONOMER AND AT LEAST ONE PHOTOSENSITIVE CATALYST COMPRISING AT LEAST ONE PHOTOSENSITIZER ACTIVATABLE BY VISIBLE LIGHT HAVING A WAVELENGTH IN THE RANGE 4,000 A TO 7,500 A, AND AT LEAST ONE REDUCING AGENT CAPABLE OF REDUCING THE PHOTOSENSITIZER WHEN THE PHOTOSENSITIZER IS IN AN ACTIVATED STATE, THE PHOTOSENSITIVE CATALYST BEING CAPABLE OF CURING THE ORGANIC MATERIAL TO CONVERT THE IMPREGNATED FABRIC ARTICLE INTO AN IMMOBILIZING ORTHOPAEDIC DEVICE UPON EXPOSURE OF THE IMPREGNATED FABRIC ARTICLE TO SAID VISIBLE LIGHT.
Claim 3
Dependent Claim
15 words
An orthopaedic device as claimed in claim 1 in which the article is a bandage.
Claim 4
Dependent Claim
16 words
An orthopaedic device as claimed in claim 1 in which the article has an open structure.
Claim 5
Dependent Claim
17 words
An orthopaedic device as claimed in claim 1 in which the article is a glass fiber article.
Claim 6
Dependent Claim
20 words
An orthopaedic device as claimed in claim 1 in which the ethylenically unsaturated polymeric material is an ethylenically unsaturated polyester.
Claim 7
Dependent Claim
28 words
An orthopaedic device as claimed in claim 1 in which the article comprises from 10 to 60 percent of curable organic material by weight of the impregnated article.
Claim 8
Dependent Claim
28 words
An orthopaedic device as claimed in claim 6 in which the article comprises from 20 to 50 percent of curable organic material by weight of the impregnated article.
Claim 9
Dependent Claim
21 words
An orthopaedic device as claimed in claim 1 in which the photosensitive catalyst comprises at least one uranyl compound as photosensitizer.
Claim 10
Dependent Claim
16 words
An orthopaedic device as claimed in claim 8 in which the uranyl compound is uranyl nitrate.
Claim 11
Dependent Claim
17 words
An orthopaedic device as claimed in claim 1 in which the photosensitive catalyst comprises fluorenone as photosensitizer.
Claim 12
Dependent Claim
23 words
An orthopaedic device as claimed in claim 1 in which the photosensitive catalyst comprises at least one Alpha -diketone photosensitizer having the structure
Claim 13
Dependent Claim
15 words
An orthopaedic device as claimed in claim 11 in which the groups A are aromatic.
Claim 14
Dependent Claim
17 words
An orthopaedic device as claimed in claim 12 in which the photosensitive catalyst comprises benzil as photosensitizer.
Claim 15
Dependent Claim
21 words
An orthopaedic device as claimed in claim 11 in which the photosensitive catalyst comprises camphorquinone, Alpha -naphthil or p-tolil as photosensitizer.
Claim 16
Dependent Claim
19 words
An orthopaedic device as claimed in claim 1 in which the reducing agent is a compound having the structure
Claim 17
Dependent Claim
15 words
An orthopaedic device as claimed in claim 15 in which the compound having the structure
Claim 18
Dependent Claim
15 words
An orthopaedic device as claimed in claim 15 in which the compound having the structure
Claim 19
Dependent Claim
24 words
An orthopaedic device as claimed in claim 17 in which the amine is at least one of dimethylaminoethyl methacrylate, dimethylamino ethanol and dimethylamino propanol.
Claim 20
Dependent Claim
29 words
An orthopaedic device as claimed in claim 1 in which the photosensitizer is present in a concentration of 0.01 to 5 percent by weight of the curable organic material.
Claim 21
Dependent Claim
17 words
An orthopaedic device as claimed in claim 1 in which the curable organic material includes a pigment.
Claim 22
Dependent Claim
15 words
An orthopaedic device as claimed in claim 20 in which the pigment is titanium dioxide.
Claim 23
Dependent Claim
67 words
A method of forming an orthopaedic device on a body member which method comprises applying a fabric article as claimed in claim 1 to a body member so as to support and/or enclose the body member and irradiating the fabric article with visible light having a wavelength in the range 4,000 A to 7,500 A to cure the organic material with which the fabric article is impregnated.
Claim 24
Dependent Claim
75 words
An orthopaedic device forming fabric article for applying to a body member to immobilize the latter, said article comprising: a fabric impregnated with at least one curable organic material capable of reacting to produce a stiff rigid material, said organic material comprising a copolymerizable mixture of at least one ethylenically unsaturated polyester and at least one ethylenically unsaturated monomer; and at least one photosensitive catalyst comprising at least one Alpha -diketone photosensitiser having the structure
Claim 25
Dependent Claim
75 words
An orthopaedic device forming fabric article for applying to a body member to immobilize the latter, said article comprising: a fabric impregnated with at least one curable organic material capable of reacting to produce a stiff rigid material, said organic material comprising a copolymerizable mixture of at least one ethylenically unsaturated polyester and at least one ethylenically unsaturated monomer; and at least one photosensitive catalyst comprising at least one Alpha -diketone photosensitiser having the structure
Claim 26
Dependent Claim
12 words
An orthopaedic device as in claim 23 wherein the photosensitizer is benzil.
Claim 27
Dependent Claim
30 words
An orthopaedic device as in claim 24 wherein the photosensitive catalyst includes at least one reducing agent capable of reducing the photosensitizer when the latter is in an activated state.
Claim 28
Dependent Claim
22 words
An orthopaedic device as in claim 23 wherein the photosensitizer is selected from the group consisting of camphorquinone, Alpha -naphthil and p-tolil.
Claim 29
Dependent Claim
30 words
An orthopaedic device as in claim 26 wherein the photosensitive catalyst includes at least one reducing agent capable of reducing the photosensitizer when the latter is in an activated state.
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |