Wound dressing

• US 20040127836A1
• Filed: 12/03/2003
• Published: 07/01/2004
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Ossur hf
• Original Assignee: Ossur hf
• Inventors: Sigurjonsson, Gudmundur Fertram, Elefsen, Thordur M.
• Granted Patent: US 7,459,598 B2
• Time in Patent Office: Days
• US Class Current: 602/41
• 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 including at least one skin adherent facing layer comprising a discrete layer of silicone gel having a plurality of preformed apertures arranged in a pattern. The pattern of apertures may be equally spaced and generally uniform in shape. The wound dressing may include a facing layer with at least two discrete, adjacent silicone gel layers having different strength properties.

Claims

1. A wound dressing for covering a wound, comprising:

a skin adherent facing layer consisting of a discrete layer of silicone gel having a plurality of preformed apertures arranged in a pattern.

2. The wound dressing according to claim 1, wherein the plurality of apertures are defined in a pattern varying in number per unit area according to their location relative to a center axis of the silicone gel layer.

3. The wound dressing according to claim 1, wherein the plurality of apertures are defined in a pattern varying in size according to their location relative to a center axis of the silicone gel layer.

4. The wound dressing according to claim 1, wherein the silicone gel layer is substantially planar along a proximal surface thereof.

5. The wound dressing according to claim 1, wherein the silicone gel layer includes a skin treatment agent selected from the group consisting of aloe vera and petroleum jelly.

6. The wound dressing according to claim 1, wherein the apertures are generally circular.

7. The wound dressing according to claim 1, wherein the apertures are generally uniform in shape.

8. The wound dressing according to claim 1, wherein the apertures are generally equally spaced from one another.

9. The wound dressing according to claim 1, wherein the pattern of the apertures comprises alternating apertures of at least two different sizes.

10. The wound dressing according to claim 9, wherein the apertures have two different sizes, the first size being larger than the second size and the apertures of the first size being bordered by the apertures of the second size.

11. The wound dressing according to claim 10, wherein the apertures of the second size are bordered by the apertures of the first size.

12. The wound dressing according to claim 1, wherein the silicone gel layer has a progressive increase of tackiness extending from a central portion to a border portion thereof.

13. The wound dressing according to claim 1, wherein the silicone gel layer is partially cured.

14. The wound dressing according to claim 1, wherein the silicone gel layer has regions of varying thickness.

15. A wound dressing for covering a region of skin, the wound dressing consisting of:

a facing layer comprising at least one discrete layer of cross-linked silicone gel having at least one aperture.

16. The wound dressing according to claim 15, wherein the facing layer includes two discrete layers of silicone gel, each layer of silicone gel having a different tensile strength.

17. The wound dressing according to claim 16, wherein each of the two discrete layers of silicone gel has a plurality of apertures extending therethrough and generally aligned with apertures of an adjacent one of said discrete layers of silicone gel.

18. A wound dressing for covering a region of skin, the wound dressing consisting of:

a skin adherent facing layer of a discrete layer of cross-linked silicone gel having a plurality of preformed apertures arranged in a pattern.

19. The wound dressing according to claim 18, wherein the pattern comprises a plurality of equally spaced apertures.

20. The wound dressing according to claim 18, wherein the pattern comprises a plurality of apertures having a substantially uniform shape.