Hydrogel burn dressing product

• US 5,115,801 A
• Filed: 05/02/1990
• Issued: 05/26/1992
• Est. Priority Date: 05/02/1990
• Status: Expired due to Term

• Current Assignee: Conmed Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: NDM Acquisition Corporation
• Inventors: Allaire, Michael J., Sturtevant, Wayne R., Cartmell, James V., Wolf, Michael L.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): PREBILIC, PAUL B
• Application Number:
  US07/517,837
• Time in Patent Office: 755 Days
• Field of Search: 128/156, 128/888, 604/289, 604/307, 424/443, 424/447
• US Class Current: 602/48
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 2013/00523 with hydrogel wound bandages with alginate A61F2013/00229; adhesive for plasters; with hydrogel A61F2013/00676; water-based A61F2013/00689; for use on mucosae A61F2013/00714; for use on wounds A61F2013/00719; wound humidity control with hydrocolloids or superabsorbers A61F2013/00748; with absorbent adhesives A61F2013/00757; with fumed silica A61F2013/00787; with viscoelastic oil-elastomer gel A61F2013/00893
• CPC Class Codes: A61F 2013/00553 with detachable parts
• CPC Class Codes: A61F 2013/00604 Multilayer
• CPC Class Codes: A61F 2013/00608 with reinforcing layers
• CPC Class Codes: A61F 2013/00748 with hydrocolloids or superabsorbers wound bandages with alginate A61F2013/00229; plasters with cyano-acrylic adhesive A61F2013/00459; plasters for treating burn with hydrogel A61F2013/00523; adhesive for plasters, with hydrogel A61F2013/00676; water-based A61F2013/00689; for use on mucosae A61F2013/00714; for use on wounds A61F2013/00719; with absorbent adhesives A61F2013/00757; with fumed silica A61F2013/00787; with viscoelastic oil-elastomer gel A61F2013/00893
• CPC Class Codes: A61F 2013/00804 different adhesion of different adhesive layers plasters with a double adhesive layer A61F2013/00421; with cyano-acrylic adhesive A61F2013/00459; with adhesive connecting means A61F2013/00561; adhesives for plasters A61F2013/00655; with absorbent adhesives A61F2013/00757; with permeable adhesive layers A61F2013/00761; changing the adhesion force with strain value A61F2013/00838
• CPC Class Codes: A61F 2013/00829 rigid or semi-rigid backing
• CPC Class Codes: A61F 2013/00846 with transparent or translucent part
• CPC Class Codes: A61F 2013/00868 thin film
• CPC Class Codes: A61L 15/26 Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/60 Liquid-swellable gel-forming materials, e.g. super-absorbents
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

A flexible burn dressing product contains a hydrogel material in a gel-like phase. The burn dressing product is comprised of several layers including a burn dressing and a release layer. The burn dressing is comprised of a bacterial barrier layer coated with a bonding layer, a reticulated layer impregnated with a hydrogel material, and a hydrogel material layer. A dimensionally stable backing member may also be adhesively attached to the bacterial barrier layer to help the burn dressing maintain its shape until it is applied to a patient. When the burn dressing product is to be applied to a burn site, the release layer is removed to expose the hydrogel material layer. The remaining layers of the burn dressing product are then applied to the burn site, with the hydrogel material layer directly contacting the burn. Once these layers are in place, the dimensionally stable backing member is removed.

Claims

1. A burn dressing product for a burn, comprising:

a burn dressing including

a bacterial barrier layer having a first side and a second side,

a bonding layer coated on said first side of said bacterial barrier layer,

a reticulated layer being sufficiently absorbent to be impregnated with a polyurethane hydrogel material, said reticulated layer being selected from the group consisting of foams, scrim and non-woven materials, said reticulated layer having a first side and a second side, wherein said second side of said reticulated layer is secured to said bacterial barrier layer by means of said bonding layer, and

a polyurethane hydrogel material layer on said first side of said impregnated reticulated layer; and

a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.

2. A burn dressing product as claimed in claim 1 further including a dimensionally stable backing member having an adhesive layer, said backing member secured to said second side of said bacterial barrier layer by means of said adhesive layer.

3. A burn dressing product as claimed in claim 1 wherein said bacterial barrier layer comprises a polyurethane material.

4. A burn dressing product for a burn, comprising:

a burn dressing including

a bacterial barrier layer having a first side and a second side;

a bonding layer coated on said first side of said bacterial barrier layer;

a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer;

a hydrogel material layer on said first side of said impregnated reticulated layer wherein said hydrogel material is formed from about 15% to about 30% by weight of a polyhydric 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; and

a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.

5. A burn dressing product for a burn, comprising:

a burn dressing including

a bacterial barrier layer having a first side and a second side;

a bonding layer coated on said first side of said bacterial barrier layer;

a reticulated layer impregnated with a hydrogel material and having a first side and a second side, said second side of said reticulated layer being secured to said bacterial barrier layer by means of said bonding layer;

a hydrogel material layer on said first side of said impregnated reticulated layer wherein aid hydrogel material is formed from 17% by weight of a polypropylene glycol, 12% by weight of an isophorone diisocyanate terminated prepolymer, 9% by weight of an polyethylene oxide based diamine, 1% by weight of a salt, and the balance water; and

a release liner overlying said hydrogel material layer and secured to said first side of said reticulated layer by means of said hydrogel material layer.