US4454873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator medium for orthopedic cast material
Assignee: Hexcel Corp
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Filing: 1982-02-26
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Granted: 1984-06-19
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Expires: 2002-02-26
Abstract
Abstract An orthopedic cast material having a thermoplastic material and provided with a quantity of (poly)ethylene oxide applied thereto to prevent adherence of adjacent convolutions of the cast material when it is in the form of a roll and is immersed in hot water prior to being wrapped on a limb or body part of a patient. The (poly)ethylene oxide can be in the form of a coating on the outer surface of the cast material or in the resin of the cast material.
Inventors
- 👤 Carol J. Laufenberg
- 👤 Milton F. Custer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:37
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
72 words
An assembly for use as an orthopedic cast comprising: a body containing a thermoplastic resin material and being in the form of a sheet wrapped in a roll, said roll adapted to be immersed in hot water to prepare the resin material for wrapping onto a limb or body part of a patient; and a quantity of (poly)ethylene oxide applied to the body to prevent adherence of adjacent convolutions of the roll.
Claim 2
Dependent Claim
72 words
An assembly for use as an orthopedic cast comprising: a body containing a thermoplastic resin material and being in the form of a sheet wrapped in a roll, said roll adapted to be immersed in hot water to prepare the resin material for wrapping onto a limb or body part of a patient; and a quantity of (poly)ethylene oxide applied to the body to prevent adherence of adjacent convolutions of the roll.
Claim 3
Dependent Claim
26 words
An assembly as set forth in claim 1, wherein the (poly)ethylene oxide is in the form of a layer on the outer surface of the body.
Claim 4
Dependent Claim
19 words
An assembly as set forth in claim 1, wherein said (poly)ethylene oxide is in the resin of said body.
Claim 5
Dependent Claim
21 words
An assembly as set forth in claim 1, wherein the (poly)ethylene oxide is applied to the body from a water solution.
Claim 6
Dependent Claim
22 words
An assembly as set forth in claim 1, wherein the (poly)ethylene oxide is applied to the body from a chlorinated solvent solution.
Claim 7
Dependent Claim
28 words
An assembly as set forth in claim 1, wherein the quantity of (poly)ethylene oxide is in the form of a coating on the outer surface of the body.
Claim 8
Independent Claim
52 words
The method of preparing an orthopedic cast material containing a thermoplastic resin comprising: providing a length of said cast material; and applying (poly)ethylene oxide to the said length of material to prevent adjacent convolutions of the layer from adhering to each other when the length is in the form of a roll.
Claim 9
Independent Claim
52 words
The method of preparing an orthopedic cast material containing a thermoplastic resin comprising: providing a length of said cast material; and applying (poly)ethylene oxide to the said length of material to prevent adjacent convolutions of the layer from adhering to each other when the length is in the form of a roll.
Claim 10
Dependent Claim
25 words
A method as set forth in claim 7, wherein said applying step includes immersing the cast material in a solvent solution of the (poly)ethylene oxide.
Claim 11
Dependent Claim
13 words
A method as set forth in claim 8, wherein the solvent is water.
Claim 12
Dependent Claim
17 words
A method as set forth in claim 9, wherein said solution contains 0.01% to 0.5% (poly)ethylene oxide.
Claim 13
Dependent Claim
15 words
A method as set forth in claim 9, wherein said solutions contains 0.09% (poly)ethylene oxide.
Claim 14
Dependent Claim
15 words
A method as set forth in claim 8, wherein the solvent is a chlorinated solvent.
Claim 15
Dependent Claim
21 words
A method as set forth in claim 7, wherein said applying step includes spraying the (poly)ethylene oxide on the cast material.
Claim 16
Dependent Claim
23 words
A method as set forth in claim 7, wherein said applying step includes coating the surface of the cast material with (poly)ethylene oxide.
Claim 17
Dependent Claim
23 words
A method as set forth in claim 7, wherein said applying step includes adding (poly)ethylene oxide to the resin of said cast material.
Claim 18
Dependent Claim
24 words
A method as set forth in claim 15, wherein the (poly)ethylene oxide is approximately 1% by weight of the resin in said cast material.
Claim 19
Dependent Claim
34 words
A method as set forth in claim 7, wherein said applying step includes adding (poly)ethylene oxide to the resin of said cast material and coating the surface of the cast material with (poly)ethylene oxide.
References Cited (Backward Citations)
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Cited
US4105025A
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US4344423A
Cited
US4214578A
Cited
US4326509A
Cited
US4372311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |