EP0174803A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adhesive dressings
Assignee: Beiersdorf AG
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Filing: 1985-09-05
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Granted: —
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Expires: 2005-09-05
Abstract
Abstract A bacteria proof adhesive wound dressing has a moisture vapour transmission rate of greater than 300 g/m 2 /24 hrs. at 37°C at 100% to 10% relative humidity difference and comprises a film which is coated on one face by an adhesive layer and has bonded to its other face a layer of foam. The foam, which is preferably a reticulated polyurethane foam from 0.5 to 2 mm thick, provides support to the film during application. The foam is flexible and conformable enough when bonded to the film when the dressing is in use so that it does not have to be removed after application of the dressing.
Inventors
- 👤 William Franklin Pratt
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 06:29
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/023; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L15/42; A61L15/425
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
A bacteria proof adhesive wound dressing having a moisture vapour transmission rate greater than 300 gm- 2 24hrs -1 at 37°C at 100% to 10% relative humidity difference which dressing comprises a film which is coated on one face by an adhesive layer characterised in that the film has bonded to its other face a layer of foam.
Claim 2
Dependent Claim
58 words
A bacteria proof adhesive wound dressing having a moisture vapour transmission rate greater than 300 gm- 2 24hrs -1 at 37°C at 100% to 10% relative humidity difference which dressing comprises a film which is coated on one face by an adhesive layer characterised in that the film has bonded to its other face a layer of foam.
Claim 3
Dependent Claim
18 words
A wound dressing as claimed in claim 1 in which the foam is from 0.5 to 2mm thick.
Claim 4
Dependent Claim
20 words
A wound dressing as claimed in either of claims 1 or 2 in which the foam is a reticulated foam.
Claim 5
Dependent Claim
21 words
A wound dressing as claimed in any of claims 1 to 3 in which the foam is formed from a polyurethane.
Claim 6
Dependent Claim
34 words
A wound dressing as claimed in any of claims 1 to 4 in which the layer of foam is bonded to the non-adhesive face of the film by means of a pressure sensitive adhesive.
Claim 7
Dependent Claim
32 words
A wound dressing as claimed in any of claims 1 to 4 in which the layer of foam is bonded to the non-adhesive face of the film by means of flame bonding.
Claim 8
Dependent Claim
50 words
A wound dressing as claimed in any of claims 1 to 6 in which the film has a thickness of from 10 to 60 microns and a moisture vapour transmission rate of greater than 300 gm- Z 24 hr -1 at 37°C and at 100% to 10% relative humidity difference.
Claim 9
Dependent Claim
15 words
A wound dressing as claimed in claim 7 in which the film is a polyurethane.
Claim 10
Dependent Claim
17 words
A wound dressing as claimed in claim 8 in which the film is a polyetherester block copolymer.
Claim 11
Dependent Claim
25 words
A wound dressing as claimed in any of claims 1 to 9 in which the adhesive layer is continuous and comprises a pressure sensitive adhesive.
Claim 12
Dependent Claim
21 words
A wound dressing as claimed in claim 1 in which the adhesive surface of the dressing is covered by a protector.
Claim 13
Dependent Claim
19 words
A wound dressing as claimed in claim 11 which is sterile and is packaged in a bacteria proof pack.
References Cited (Backward Citations)
No citation records indexed.
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