Wound dressing

• US 7,402,721 B2
• Filed: 12/03/2003
• Issued: 07/22/2008
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Osur Hf
• Original Assignee: Ossur hf
• Inventors: Sigurjonsson, Gudmundur Fertram, Elefsen, Thordur M., Gudnason, Palmar I.
• Primary Examiner(s): Lewis; Kim M
• Application Number:
  US10/725,601
• Publication Number:
  US 20040138605A1
• Time in Patent Office: 1,693 Days
• Field of Search: 602 41- 59, 604304-308, 128/888, 128/889
• US Class Current: 602/55
• CPC Class Codes: A61F 13/0203 with fluid retention members
• CPC Class Codes: A61F 13/022 having more than one layer with different fluid retention characteristics
• CPC Class Codes: A61F 13/0223 characterized by parametric properties of the fluid retention layer, e.g. absorbency, wicking capacity, liquid distribution
• CPC Class Codes: A61F 13/0246 characterised by the skin-adhering layer
• CPC Class Codes: A61F 13/0276 Apparatus or processes for manufacturing adhesive dressings or bandages
• CPC Class Codes: A61F 2013/00578 conformable; soft or flexible, e.g. elastomeric
• CPC Class Codes: A61F 2013/00587 Thickness
• CPC Class Codes: A61F 2013/00604 Multilayer
• 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 2013/00846 with transparent or translucent part
• CPC Class Codes: A61F 2013/00885 impervious, i.e. occlusive bandage
• 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 15/34 Oils, fats, waxes or natural resins A61L15/225 takes precedence
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 15/58 Adhesives
• CPC Class Codes: A61L 15/60 Liquid-swellable gel-forming materials, e.g. super-absorbents
• CPC Class Codes: C08L 83/04 Polysiloxanes

Abstract

A wound dressing includes an absorbent core having opposed proximal and distal surfaces including central and border portions, and a discrete skin adherent, elastomeric gel facing layer having a distal surface secured to the proximal surface of the absorbent core and a plurality of through extending apertures arranged in a pattern. A pressure sensitive adhesive layer is applied to the facing layer on at least a segment of a proximal surface opposed to the distal surface thereof. The adhesive layer has greater skin adherence properties than the elastomeric gel of the facing layer.

Claims

1. A wound dressing having proximal and distal sides, the proximal side defining an outermost surface to form the bodyside surface of the dressing, comprising:

an absorbent core defining peripheral edges and having opposed proximal and distal surfaces including central and border portions;

a discrete skin adherent facing layer comprising a cross-linked silicone gel, the facing layer having a proximal surface, and a distal surface directly secured to the proximal surface of the absorbent core and delimited by the peripheral edges thereof, said facing layer defining a region having a plurality of through extending apertures arranged in a pattern; and

a discrete pressure sensitive adhesive layer applied directly to the facing layer on at least a segment of the proximal surface thereof only surrounding the region of the apertures;

wherein the facing layer and the adhesive layer are contiguous and combine to define the entirety of the bodyside surface of the dressing;

wherein the adhesive layer has greater skin adherence properties than the elastomeric gel of the facing layer;

wherein the adhesive layer is located along at least one segment of a border portion of the facing layer corresponding to the border portion of the absorbent core.

2. The wound dressing according to claim 1, wherein the plurality of apertures of the facing layer are generally located along a central portion thereof corresponding to the central portion of the absorbent core.

3. The wound dressing according to claim 2, wherein a border portion of the facing layer generally corresponding to the border portion of the absorbent core is substantially free of said apertures.

4. The wound dressing according to claim 1, wherein the adhesive layer is applied to at least two opposed sides of the border portion of the facing layer.

5. The wound dressing according to claim 1, wherein the adhesive layer is only applied near the peripheral border of the facing layer.

6. The wound dressing according to claim 1, wherein the apertures of the facing layer are provided only at a central portion of the facing layer corresponding to a central portion of the absorbent core, said adhesive layer is applied in a region bordering the central portion of the facing layer.

7. The wound dressing according to claim 1, wherein the adhesive layer is generally apertured.

8. The wound dressing according to claim 1, wherein the adhesive layer is an acrylate glue.

9. A wound dressing having proximal and distal sides, the proximal side defining an outermost surface to form the bodyside surface of the dressing, comprising:

an absorbent core defining peripheral edges and having opposed proximal and distal surfaces including central and border portions;

a discrete skin adherent facing layer comprising a cross-linked silicone gel, the facing layer having a proximal surface, and a distal surface directly secured to the proximal surface of the absorbent core and delimited by the peripheral edges thereof, said facing layer defining a region having a plurality of through extending apertures arranged in a pattern, the facing layer having a central portion and a border portion bordering the central portion; and

a discrete pressure sensitive adhesive layer applied directly to the facing layer on at least a segment of the proximal surface thereof surrounding the region of the apertures;

wherein the facing layer and the adhesive layer are contiguous and combine to define the entirety of the bodyside surface of the dressing;

wherein the adhesive layer is applied to at least two opposed sides of the border portion of the facing layer;

wherein the adhesive layer is generally apertured.

10. The wound dressing according to claim 9, wherein the adhesive layer has greater skin adherence properties than the elastomeric gel of the facing layer.

11. The wound dressing according to claim 9, wherein the proximal surface of the facing layer is generally planar.

12. The wound dressing according to claim 9, wherein the distal surface of the facing layer is generally planar.

13. A wound dressing having proximal and distal sides, the proximal side defining an outermost surface to form the bodyside surface of the dressing, comprising:

an absorbent core defining peripheral edges and having opposed proximal and distal surfaces including central and border portions;

a discrete skin adherent facing layer comprising a cross-linked silicone gel, the facing layer having a proximal surface, and a distal surface directly secured to the proximal surface of the absorbent core and delimited by the peripheral edges thereof, said facing layer defining a region having a plurality of through extending apertures arranged in a pattern and formed irrespective of the proximal surface of the absorbent core; and

a discrete pressure sensitive adhesive layer applied directly to the facing layer on at least a segment of the proximal surface thereof only surrounding the region of the apertures;

wherein the facing layer and the adhesive layer are contiguous and combine to define the entirety of the bodyside surface of the dressing;

wherein the adhesive layer has greater skin adherence properties than the elastomeric gel of the facing layer.