Wound dressing

Patent metadata

Field	Value
Publication number	US-9820888-B2
Application number	US-201314035487-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Sep 26, 2006
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

Embodiments disclosed within herein relate to a wound dressing, suitable for use in negative pressure wound therapy, comprising a body of porous material, the body of porous material comprising a plurality of cuts which provide regions of flexibility within the body. Further embodiments relate to methods of manufacturing and method of use of such wound dressings. In addition, the wound dressing can comprise a retaining mechanism removably coupled to the material and configured to retain the material in the expanded conformation.

First claim

What is claimed is:

1. A wound dressing apparatus comprising:
an open lattice comprising:
a porous wound dressing material;
a plurality of open apertures in the porous wound dressing material, wherein the plurality of open apertures extend entirely through the porous wound dressing material;

a backing layer coupled with a non-wound facing surface of the porous wound dressing material of the open lattice, the non-wound facing surface of the porous wound dressing material being opposite to a wound facing surface of the porous wound dressing material;
a lower layer coupled with the wound facing surface of the porous wound dressing material, the lower layer comprising a perforated sheet having an outer perimeter that matches an outer perimeter of the porous wound dressing material, the perforated sheet comprising a plurality of perforations aligned with the plurality of open apertures; and
adhesive applied on a wound facing side of the lower layer;
wherein the backing layer covers the open apertures in the porous wound dressing material and is transparent so that visual inspection of a wound is possible through the open apertures and the plurality of perforations, and
wherein the plurality of open apertures maintain the same dimension of open space from the non-wound facing surface of the porous wound dressing material to the wound facing surface of the porous wound dressing material.

2. The wound dressing apparatus of claim 1 , wherein the lattice comprises gripping portions.

3. The wound dressing apparatus of claim 2 , wherein the gripping portions are provided at a periphery of the lattice.

4. The wound dressing apparatus of claim 1 , wherein the lattice is constructed from a silicone elastomer.

5. The wound dressing apparatus of claim 1 , wherein the lattice is constructed from a polyurethane foam.

6. The wound dressing apparatus of claim 1 , wherein the apertures are one of rectangular, rhomboid, and hexagonal in shape.

7. The wound dressing apparatus of claim 1 , further comprising a source of negative pressure configured to apply negative pressure to a space under the backing layer.

8. The wound dressing apparatus of claim 1 , wherein the lower layer is a wound contact layer.

9. The wound dressing apparatus of claim 1 , wherein the backing layer is moisture permeable.

10. The wound dressing apparatus of claim 1 , wherein the porous wound dressing material is opaque.

11. The wound dressing apparatus of claim 1 , wherein the lattice is constructed from a hydrofibre.

12. The wound dressing apparatus of claim 1 , wherein the lattice is constructed from a non-woven material.

13. The wound dressing apparatus of claim 1 , wherein the lattice is constructed from a woven material.

14. A wound dressing apparatus comprising:
an open lattice comprising:
a porous wound dressing material;
a plurality of open apertures in the porous wound dressing material, wherein the plurality of open apertures extend entirely through the porous wound dressing material; a backing layer coupled with a non-wound facing surface of the porous wound dressing material of the open lattice, the non-wound facing surface of the porous wound dressing material being opposite to a wound facing surface of the porous wound dressing material;
a lower layer coupled with the wound facing surface of the porous wound dressing material, the lower layer comprising a perforated sheet having an outer perimeter that matches an outer perimeter of the porous wound dressing material, the perforated sheet comprising a plurality of perforations aligned with the plurality of open apertures; adhesive applied on a wound facing side of the lower layer;
wherein the wound dressing further comprises a gripping portion that extends outward beyond perimeters of the open lattice and the lower layer; and
wherein the plurality of open apertures maintain the same dimension of open space from the non-wound facing surface of the porous wound dressing material to the wound facing surface of the porous wound dressing material.

Assignees

• Smith & Nephew Inc

Inventors

• Greener Bryan
• Freedline Allan

Classifications

• A61F13/00038 Primary

  Human Necessities · mapped topic

• A61F13/01038 Primary

  Flexibility, stretchability or elasticity · CPC title