Patent EP0455324A1 successfully refreshed from Google Patents.
EP0455324A1
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EP
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Burn dressing product
Assignee: Paul Hartmann AG
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Filing: 1991-02-22
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Granted: —
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Expires: 2011-02-22
Abstract
Abstract A flexible burn dressing product(10) contains a hydrogel material(20) in a gel-like phase. The burn dressing product(10) is comprised of several layers including a burn dressing and a release layer(24). The burn dressing is comprised of a bacterial barrier layer(14) coated with a bonding layer(16), a reticulated layer(18) impregnated with a hydrogel material(20), and a hydrogel material layer(22). A dimensionally stable backing member(26) may also be adhesively attached to the bacterial barrier layer(14) to help the burn dressing maintain its shape until it is applied to a patient. When the burn dressing product(10) is to be applied to a burn site, the release layer(24) is removed to expose the hydrogel material layer(22). The remaining layers of the burn dressing product(10) are then applied to the burn site, with the hydrogel material layer(22) directly contacting the burn. Once these layers are in place, the dimensionally stable backing member(26) is removed.
Inventors
- 👤 James V. Cartmell
- 👤 Michael L. Wolf
- 👤 Michael J. Allaire
- 👤 Wayne R. Sturtevant
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 13:48
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F; A61F13/00; A61F13/02; A61F13/023; A61L15/22; A61L15/26; A61F2013/00361; A61F2013/00365; A61F2013/00519; A61F2013/00523; A61F2013/00544; A61F2013/00553; A61F2013/00604; A61F2013/00608; A61F2013/00727; A61F2013/00748; A61F2013/00795; A61F2013/008; A61F2013/00804; A61F2013/00829; A61F2013/00846; A61F2013/00855; A61F2013/00868
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
153 words
A method of manufacturing a burn dressing product(10) for a burn wound, comprising the steps of: providing a release liner(24); providing a reticulated layer(18), said reticulated layer(18) having a first side and a second side; providing a bacterial barrier layer(14), said bacterial barrier layer(14) having a first side and a second side; coating said first side of said bacterial barrier layer(14) with a bonding layer(16); laminating said second side of said reticulated layer(18) to said first side of said bacterial barrier layer(14) wherein said bonding layer(16) is located between said reticulated layer(18) and said bacterial barrier layer(14); impregnating said reticulated layer(18) with a hydrogel material(20), said hydrogel material(20) forming a smooth hydrogel material layer(22) on said first side of said impregnated reticulated layer(18); applying said release liner(24) to said first side of said smooth hydrogel layer(22) wherein said smooth hydrogel material layer(22) is located between said impregnated reticulated layer(18) and said release liner(24).
Claim 2
Dependent Claim
22 words
A method of manufacturing a burn dressing product(10) as claimed in claim 1, characterized by said reticulated layer(18) comprising a foam layer.
Claim 3
Dependent Claim
22 words
A method of manufacturing a burn dressing product(10) as claimed in claim 1, characterized by said reticulated layer(18) comprising a scrim layer.
Claim 4
Dependent Claim
23 words
A method of manufacturing a burn dressing product(10) as claimed in claim 1, characterized by said reticulated layer(18) comprising a non-woven material layer.
Claim 5
Independent Claim
45 words
A method of manufacturing a burn dressing product (10) as claimed in any preceding claim, further characterised by the inclusion of the step of securing a dimensionally stable backing member(26) to said second side of said bacterial barrier layer(14) by means of an adhesive layer(28).
Claim 6
Dependent Claim
68 words
A method of manufacturing a burn dressing product(10) as claimed in claim 5, characterized by said smooth hydrogel material layer(22) having greater adhesion qualities than said adhesive layer(28) so as to allow removal of said dimensionally stable backing member(26) from said bacterial barrier layer(14) after application of the burn dressing product(10) to the burn while maintaining adhesion between said hydrogel material layer(22) and the skin of a patient.
Claim 7
Dependent Claim
64 words
A method of manufacturing a burn dressing product(10) as claimed in claim 5, characterized by said bonding layer(16) having stronger bonding qualities than said adhesive layer(28) so as to allow removal of said dimensionally stable backing member(26) from said bacterial barrier layer(14) after application of the burn dressing product(10) to the burn while maintaining adhesion between said reticulated layer(18) and said bacterial barrier layer(14).
Claim 8
Independent Claim
84 words
A method of manufacturing a burn dressing product as claimed in any preceding claim, characterised by said hydrogel material(20) comprising from about 15% to about 30% by weight of a polyhedric alcohol selected from a group consisting of polypropylene glycol, polyethylene glycol and glycerine, from about 8% to about 14% by weight of an isophorone diisocyanate terminated prepolymer, from about 5% to about 10% by weight of a polyethylene oxide-based diamine, up to about 1% by weight of a salt, and the balance water.
Claim 9
Dependent Claim
114 words
A burn dressing product(10) for a burn, comprising: a burn dressing including a bacterial barrier layer(14) having a first side and a second side, a bonding layer(16) coated on said first side of said bacterial barrier layer(14), a reticulated layer(18) impregnated with a hydrogel material(20) and having a first side and a second side, said second side of said reticulated layer(18) being secured to said bacterial barrier layer(14) by means of said bonding layer(16), and a hydrogel material layer(22) on said first side of said impregnated reticulated layer(18); and a release liner(24) overlying said hydrogel material layer(22) and secured to said first side of said reticulated layer(18) by means of said hydrogel material layer(22).
Claim 10
Dependent Claim
18 words
A burn dressing product(10) as claimed in claim 9, characterized by said reticulated layer(18) comprising a foam layer.
Claim 11
Dependent Claim
18 words
A burn dressing product(10) as claimed in claim 9, characterized by said reticulated layer(18) comprising a scrim layer.
Claim 12
Dependent Claim
19 words
A burn dressing product(10) as claimed in claim 9, characterized by said reticulated layer(18) comprising a non-woven material layer.
Claim 13
Dependent Claim
46 words
A burn dressing product(10) as claimed in claim 9, 10,11 or 12, further characterised by the inclusion of a dimensionally stable backing member(26) having an adhesive layer(28), said backing member(26) secured to said second side of said bacterial barrier layer(14) by means of said adhesive layer(28).
Claim 14
Dependent Claim
23 words
A burn dressing product(10) as claimed in any of claims 9 to 13,characterised by said bacterial barrier layer (14) comprising a polyurethane material.
Claim 15
Dependent Claim
85 words
A burn dressing product(10) as claimed in any of claims 9 to 14, characterised by said hydrogel material (20) comprising from about 15% to about 30% by weight of a polyhedric alcohol selected from a group consisting of polypropylene glycol, polyethylene glycol and glycerine, from about 8% to about 14% by weight of an isophorone diisocyanate terminated prepolymer, from about 5% to about 10% by weight of a polyethylene oxide based diamine, up to about 1% by weight of a salt, and the balance water.
Claim 16
Dependent Claim
51 words
A burn dressing product(10) as claimed in claim 15, characterized in that said hydrogel material(20) comprises: 17% by weight of said polypropylene glycol; 12% by weight of said isophorone diisocyanate terminated prepolymer; 9% by weight of said polyethylene oxide based diamine; 1% by weight of said salt; and the balance water.
Claim 17
Independent Claim
154 words
A method of application of a burn dressing to a burn wound site, the burn dressing including (A) a reticulated layer(18) impregnated with a hydrogel material, (B) a bacterial barrier layer(14) secured to one side of said reticulated layer(18), and (C) a hydrogel material layer(22) secured to the other side of said reticulated layer(18), said burn dressing being provided as a part of a product(10) further including a release liner(24) adhesively attached to a first side of the hydrogel material layer(22), comprising the steps of: partially removing said release liner(24) from said first side of said hydrogel material layer(22) of the burn dressing; applying the burn dressing over the burn site in a rolling motion, whereby said hydrogel material layer(22) directly contacts the burn; and continuing to remove said release liner(24) from said first side of said hydrogel material layer(22) of the burn dressing until said hydrogel material layer(22) completely covers the burn site.
Claim 18
Dependent Claim
80 words
A method of application of a burn dressing as claimed in claim 17, characterized in that the burn dressing product(10) further includes a dimensionally stable backing member(26) adhesively attached to a side of the bacterial barrier layer(14) opposite the reticulated layer(18) via an adhesive layer(28), the application of the burn dressing further including the step of removing said dimensionally stable backing member(26) from said second side of said barrier layer(14) after the burn dressing has been applied to the burn.
Claim 19
Dependent Claim
69 words
A method of application of a burn dressing as claimed in claim 18, characterized in that said smooth hydrogel material layer(22) has greater adhesion qualities than said adhesive layer(28) so as to allow removal of said dimensionally stable backing member(26) from said bacterial barrier layer(14) after application of the burn dressing product(10) to the burn while maintaining adhesion between said hydrogel material layer(22) and the skin of a patient.
Claim 20
Dependent Claim
66 words
A method of application of a burn dressing product(10) as claimed in claim 18, characterized in that said bonding layer(16) has stronger bonding qualities that said adhesive layer(28) so as to allow removal of said dimensionally stable backing member(26) from said bacterial barrier layer(14) after application of the burn dressing product(10) to the burn while maintaining adhesion between said reticulated layer(18) and said bacterial barrier layer(14).
Claim 21
Independent Claim
89 words
A method of application of a burn dressing product(10) as claimed in any of claims 17 to 20, characterised in that said hydrogel material(20) comprises from about 15% to about 30% by weight of a polyhedric alcohol selected from a group consisting of polypropylene glycol, polyethylene glycol and glycerine, from about 8% to about 14% by weight of an isophorone diisocyanate terminated prepolymer, from about 5% to about 10% by weight of a polyethylene oxide-based diamine, up to about 1% by weight of a salt, and the balance water.
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