US4627424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold water curable orthopedic cast
Assignee: BSN Medical Inc
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Filing: 1983-06-08
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Granted: 1986-12-09
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Expires: 2003-06-08
Abstract
Abstract A bandage material for forming in place an orthopedic cast comprising a pliant, large mesh fabric carrier formed from a knit of a high-strength, high-modulus fiberglass yarn with a low moisture pick-up, the fabric carrier having openings of relatively large transverse dimension, and being coated with a polymer composition comprising a cold water curable polyurethane prepolymer comprising the reaction product of a polyalkylene ether diol, a polyalkylene ether triol and a diisocyanate.
Inventors
- 👤 Kenneth S. Baron
- 👤 David W. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:36
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/10; D04B21/12; A; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07; A61L15/12; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/797; D10; D10B; D10B2509/00; D10B2509/02; D10B2509/024
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A bandage material for forming in place an orthopedic cast comprising a pliant, large mesh fabric carrier formed from a knot of a high-strength, high-modulus fiberglass yarn with a low moisture pick-up, the fabric carrier having openings of relatively large transverse dimension, and being coated with a polymer composition comprising (a) a water curable polyurethane prepolymer comprising the reaction product of a polyalkylene ether diol, a polyalkylene ether triol and a diisocyanate, wherein the ratio of diol to triol is from 1:9 to 9:1 and (b) an amine catalyst.
Claim 2
Dependent Claim
89 words
A bandage material for forming in place an orthopedic cast comprising a pliant, large mesh fabric carrier formed from a knot of a high-strength, high-modulus fiberglass yarn with a low moisture pick-up, the fabric carrier having openings of relatively large transverse dimension, and being coated with a polymer composition comprising (a) a water curable polyurethane prepolymer comprising the reaction product of a polyalkylene ether diol, a polyalkylene ether triol and a diisocyanate, wherein the ratio of diol to triol is from 1:9 to 9:1 and (b) an amine catalyst.
Claim 3
Dependent Claim
16 words
The bandage material according to claim 1, wherein the polymer composition further comprises a mineral acid.
Claim 4
Dependent Claim
14 words
The bandage material according to claim 2, wherein the mineral acid is phosphoric acid.
Claim 5
Dependent Claim
15 words
The bandage material according to claim 1, wherein the amine catalyst is a tertiary amine.
Claim 6
Dependent Claim
21 words
The bandage material according to claim 4, wherein the tertiary amine is [(CH 3 ) 2 NCHCH 2 ] 2 O.
Claim 7
Dependent Claim
24 words
The bandage material ccording to claim 1, wherein one equivalent of polyol (diol and triol) is reacted with more than 1.8 equivalents of isocyanate.
Claim 8
Dependent Claim
25 words
The bandage material ccording to claim 1, wherein the polyurethane prepolymer comprises the reaction product of polypropylene ether diol, polypropylene ether triol and a diisocyanate.
Claim 9
Dependent Claim
27 words
The bandage material according to claim 7, wherein the diisocyanate is a modified diisocyanate prepared by reacting a diisocyanate with less than a stoichiometric amount of carbodiimide.
Claim 10
Dependent Claim
22 words
The bandage material according to claim 8, wherein the modified diisocyanate is a mixture of OCN--R--NCO, and ##STR6## where R is ##STR7##
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) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |