Patent US3881473A successfully refreshed from Google Patents.
US3881473A
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Ultraviolet light curable orthopedic cast material and method of forming an orthopedic cast
Assignee: Merck and Co Inc
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Filing: 1974-02-08
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Granted: 1975-05-06
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Expires: 1994-02-08
Abstract
Abstract An orthopedic cast material which when wrapped about a body member and cured by exposure to ultraviolet light, forms a rigid immobilizing structure and which comprises a highly light and air permeable nonirritating textile of interknit or interwoven yarns, and an ultraviolet light curable resin system carried by said yarns, said textile being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the textile of between about 0.035 inches and 0.060 inches.
Inventors
- 👤 Joseph A Corvi
- 👤 Donald C Garwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; D; D04; D04B; D04B21/00; D04B21/14; D04B21/16; D10; D10B; D10B2403/00; D10B2403/02; D10B2403/024; D10B2403/0242; D10B2509/00; D10B2509/02; D10B2509/024; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
130 words
An orthopedic cast material which when wrapped about a body member and cured by exposure to ultraviolet light, forms a rigid, high strength immobilizing structure and which comprises a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the open textile fabric of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast.
Claim 2
Dependent Claim
130 words
An orthopedic cast material which when wrapped about a body member and cured by exposure to ultraviolet light, forms a rigid, high strength immobilizing structure and which comprises a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the open textile fabric of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast.
Claim 3
Dependent Claim
15 words
The material of claim 1 wherein the resin system contains a benzoin ether or ester.
Claim 4
Dependent Claim
21 words
The material of claim 1 wherein the resin system is curable at a wavelength from about 3,650 A to 3,720 A.
Claim 5
Dependent Claim
23 words
The cast material of claim 1 wherein said fabric comprises A relatively narrow elongated strip having selvages extending along its longitudinal side edges.
Claim 6
Dependent Claim
25 words
The cast material of claim 1 wherein the filaments of said glass yarns have an average diameter between about 0.00015 inches and about 0.00018 inches.
Claim 7
Dependent Claim
16 words
The cast material of claim 1 wherein the textile fabric has rectangular openings between the yarns.
Claim 8
Dependent Claim
22 words
The cast material of claim 1 wherein the textile is knitted and is characterized by lateral stretchability and resistance to lengthwise stretchability.
Claim 9
Dependent Claim
15 words
The cast material of claim 1 wherein the textile fabric is of a Raschel knit.
Claim 10
Dependent Claim
121 words
A hard, porous, nonwetting, high strength orthopedic cast comprising a plurality of advancing and overlapping wraps of a material which comprises a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the textile of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast.
Claim 11
Dependent Claim
121 words
A hard, porous, nonwetting, high strength orthopedic cast comprising a plurality of advancing and overlapping wraps of a material which comprises a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the textile of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast.
Claim 12
Dependent Claim
13 words
The cast of claim 9 wherein a stockinet is provided within said cast.
Claim 13
Dependent Claim
15 words
The cast of claim 9 wherein a knitted polypropylene stockinet is provided within said cast.
Claim 14
Dependent Claim
14 words
The cast of claim 9 wherein the overwraps number from about 3 to 5.
Claim 15
Dependent Claim
15 words
The cast of claim 9 wherein the resin system contains a benzoin ether or ester.
Claim 16
Dependent Claim
23 words
The cast material of claim 9 wherein said fabric comprises a relatively narrow elongated strip having selvages extending along its longitudinal side edges.
Claim 17
Dependent Claim
25 words
The cast material of claim 9 wherein the filaments of said glass yarns have an average diameter between about 0.00015 inches and about 0.00018 inches.
Claim 18
Dependent Claim
22 words
The cast material of claim 9 wherein the textile is knitted and is characterized by lateral stretchability and resistance to lengthwise stretchability.
Claim 19
Dependent Claim
15 words
The cast material of claim 9 wherein the textile fabric is of a Raschel knit.
Claim 20
Independent Claim
139 words
The method of forming an orthopedic cast which comprises wrapping a body member in a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the textile of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast, and hardening said resin system by exposure to a source of ultraviolet light radiation to form a rigid, strong, light and air permeable, nonirritating cast.
Claim 21
Independent Claim
139 words
The method of forming an orthopedic cast which comprises wrapping a body member in a highly light and air permeable nonirritating open textile fabric of interknit or interwoven glass yarns and an ultraviolet light curable resin system carried by said yarns, said open textile fabric being of a mesh having essentially regularly spaced generally rectilinear openings with side dimensions between about 0.045 inches and 0.150 inches and wales or warp yarns separating adjacent openings to provide an average thickness to the textile of between about 0.035 inches and 0.060 inches in order to permit the ultraviolet rays to penetrate the multiplicity of layers of wrapped fabric that is required to produce an orthopedic cast, and hardening said resin system by exposure to a source of ultraviolet light radiation to form a rigid, strong, light and air permeable, nonirritating cast.
Claim 22
Dependent Claim
18 words
The method of claim 18 wherein a stockinet is placed on said body member prior to said wrapping.
Claim 23
Dependent Claim
20 words
The method of claim 18 wherein a knitted polypropylene stockinet is placed on said body member prior to said wrapping.
Claim 24
Dependent Claim
13 words
The method of claim 18 wherein the overwraps number from three to five.
Claim 25
Dependent Claim
20 words
The method of claim 18 wherein the cast is formed by a single exposure to a source of ultraviolet light.
Claim 26
Dependent Claim
25 words
The method of claim 18 wherein the cast is formed by exposure to ultraviolet light in the range between 3,650 A and 3, 720 A.
Claim 27
Dependent Claim
29 words
The method of claim 18 wherein the exposure to a source of ultraviolet light is from about 3 to 6 minutes to essentially harden every overwrap in the cast.
References Cited (Backward Citations)
US3421501A
Cited
US3686725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |