US4414970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic bandages
Assignee: Smith and Nephew PLC
•
Filing: 1981-07-24
•
Granted: 1983-11-15
•
Expires: 2001-07-24
Abstract
Abstract Moisture vapor transmitting elastic bandages which comprise an inner layer of fabric and an outer layer of fabric bonded to a central layer characterized in that the central layer comprises an elastomeric film are described.
Inventors
- 👤 Peter W. Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/01; A61F13/01034; A61F13/01038; B; B32; B32B; B32B27/00; B32B27/12; A61F13/01046; A61F13/02; A61F13/023; A61F13/06; A61F13/08; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L15/42; B32B25/00; B32B25/10; B32B27/40; B32B3/00; B32B3/26; B32B3/266; B32B5/00; B32B5/02; B32B5/022; A61F13/15; A61F13/53; A61F13/534; A61F13/537; A61F13/539; A61F2013/00089; A61F2013/00102; A61F2013/00119; A61F2013/00246; A61F2013/00263; A61F2013/00361; A61F2013/00727; A61F2013/00731; A61F2013/00744; A61F2013/00855; A61F2013/00876; A61F13/15577; A61F2013/15821; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51441; A61F2013/51447; A61F2013/530131; A61F2013/53445; A61F2013/53765; A61F2013/53782; A61F2013/5395; Y; Y10; Y10S; Y10S602/00; Y10S602/90
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
A moisture vapour transmitting elastic bandage which comprises an inner layer of fabric and an outer layer of fabric bonded to a central layer, said central layer comprising an apertured elastomeric film which allows the passage of wound exudate from the inner layer to the outer layer and whereby the bandage has a recoverable elastic strain in the length direction of 25% to 150% at a stress of 180 g/cm.
Claim 2
Dependent Claim
70 words
A moisture vapour transmitting elastic bandage which comprises an inner layer of fabric and an outer layer of fabric bonded to a central layer, said central layer comprising an apertured elastomeric film which allows the passage of wound exudate from the inner layer to the outer layer and whereby the bandage has a recoverable elastic strain in the length direction of 25% to 150% at a stress of 180 g/cm.
Claim 3
Dependent Claim
22 words
An elastic bandage as claimed in claim 1 in which a fabric layer is in a compressed state in the length direction.
Claim 4
Dependent Claim
16 words
An elastic bandage as claimed in claim 1 in which the central layer comprises a polyurethane.
Claim 5
Dependent Claim
18 words
An elastic bandage as claimed in claim 1 in which a fabric layer comprises an absorbent non-woven fabric.
Claim 6
Dependent Claim
18 words
An elastic bandage as claimed in claim 1 in which a fabric layer comprises an integral thermoplastic net.
Claim 7
Dependent Claim
43 words
A method of making an elastic bandage of claim 1 which comprises bonding an inner layer of fabric and an outer layer of fabric to a central layer of apertured elastomeric film in a stretched condition and thereafter allowing the composite to contract.
Claim 8
Dependent Claim
42 words
A method of making an elastic bandage of claim 5 which comprises bonding a layer of integral thermoplastic net or net precursor material to an apertured elastomeric film, stretching the laminate in a longitudinal direction and thereafter allowing the laminate to contract.
Claim 9
Dependent Claim
16 words
An elastic bandage according to claim 1 in which the apertured film is an integral net.
Claim 10
Dependent Claim
47 words
A moisture vapour transmitting elastic bandage which comprises an inner layer of fabric and an outer layer of fabric bonded by an adhesive to a central apertured film layer, said bandage becoming adhesive when stretched in a longitudinal direction by exposure of the adhesive through the apertures.
Claim 11
Dependent Claim
47 words
A moisture vapour transmitting elastic bandage which comprises an inner layer of fabric and an outer layer of fabric bonded by an adhesive to a central apertured film layer, said bandage becoming adhesive when stretched in a longitudinal direction by exposure of the adhesive through the apertures.
Claim 12
Dependent Claim
28 words
An elastic bandage according to claim 1 in which the apertured elastomeric film has 8 to 24 apertures per cm with a dimension of 0.1 to 1 mm.
Claim 13
Dependent Claim
17 words
An elastic bandage according to claim 8 in which the integral net has longitudinal and transverse strands.
Claim 14
Dependent Claim
22 words
An elastic bandage according to claim 1 in which the bandage has an initial bandaging stress of 140 g/cm to 230 g/cm.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |