US5005566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-activated orthopedic cast composition having colorant
Assignee: BSN Medical Inc
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Filing: 1990-05-24
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Granted: 1991-04-09
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Expires: 2010-05-24
Abstract
Abstract An orthopedic cast forming composition which is coated upon a flexible fabric as a water-curable prepolymer resin wherein the resin is formed by the reaction of an isocyanate and a polyol wherein the polyol has a colorant premixed therewith.
Inventors
- 👤 William C. Klintworth, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:02
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61L15/10; A61F; A61F13/00; A61F13/04; A61L15/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A method of forming an orthopedic cast about the epidermis of a body member comprising the steps of preparing, in a substantially moisture free environment, a first premix "A" of an isocyanate resin, a defoaming agent and a stabilizer/preservative, preparing a second premix "B" comprising a polyol and at least one reaction catalyst, separating a minor portion, dissolving said colorant in said minor portion and recycling and mixing said colorant added minor portion into said major portion of said premix "B", mixing said resultant premix "B" with said premix "A" to create said resultant pre-polymer, coating a flexible fabric with said resultant pre-polymer, wetting said coated fabric with water, wrapping said body member with said water-wetted coated fabric, and allowing same to harden.
Claim 2
Independent Claim
123 words
A method of forming an orthopedic cast about the epidermis of a body member comprising the steps of preparing, in a substantially moisture free environment, a first premix "A" of an isocyanate resin, a defoaming agent and a stabilizer/preservative, preparing a second premix "B" comprising a polyol and at least one reaction catalyst, separating a minor portion, dissolving said colorant in said minor portion and recycling and mixing said colorant added minor portion into said major portion of said premix "B", mixing said resultant premix "B" with said premix "A" to create said resultant pre-polymer, coating a flexible fabric with said resultant pre-polymer, wetting said coated fabric with water, wrapping said body member with said water-wetted coated fabric, and allowing same to harden.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said fabric is a knit fiberglass of mesh size within the range of 250-280 openings per square inch.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said fabric is of mesh having 265 openings per square inch.
Claim 5
Dependent Claim
10 words
The method of claim 1 wherein said colorant is blue.
Claim 6
Dependent Claim
25 words
The method of claim 4 wherein said blue colorant is formed of 0.07% by weight of blue colorant and 0.007% by weight of pink colorant.
Claim 7
Dependent Claim
10 words
The method of claim 1 wherein said colorant is pink.
Claim 8
Dependent Claim
16 words
The method of claim 6 wherein said pink colorant is in concentration of 0.01% by weight.
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) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |