Therapeutic Diffusion Hydrocolloid Wound Dressings

• US 20110257617A1
• Filed: 03/31/2011
• Published: 10/20/2011
• Est. Priority Date: 04/02/2010
• Status: Abandoned Application

• Current Assignee: OxyBand Technologies, Inc.
• Original Assignee: OxyBand Technologies, Inc.
• Inventors: Franklin, Amie B.
• Application Number:
  US13/077,381
• Publication Number:
  US 20110257617A1
• Time in Patent Office: Days
• US Class Current: 604/368
• CPC Class Codes: A61F 13/0206 with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
• CPC Class Codes: A61F 13/0213 the fluid retention member being a layer of hydrocolloid, gel forming material
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• CPC Class Codes: A61F 13/0276 Apparatus or processes for manufacturing adhesive dressings or bandages
• CPC Class Codes: A61F 2013/0017 possibility of applying fluid
• CPC Class Codes: A61F 2013/00246 in a special way pervious to air or vapours
• CPC Class Codes: A61F 2013/00523 with hydrogel
• CPC Class Codes: A61F 2013/00646 Medication patches, e.g. transcutaneous
• CPC Class Codes: A61F 2013/00859 with macroscopic openings
• CPC Class Codes: A61F 2013/00872 with controlled oxygen permeability
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 15/44 Medicaments
• CPC Class Codes: A61L 2300/10 containing or releasing inorganic materials
• CPC Class Codes: A61L 2300/412 Tissue-regenerating or healing or proliferative agents
• CPC Class Codes: A61M 2202/0208 Oxygen

Abstract

A diffusion dressing is provided comprising a paper liner, a hydrocolloid layer, a first adhesive layer, a first barrier layer with a center cutout, an oxygen release layer, an absorbent layer, a second barrier layer, and a second adhesive layer with a center cutout. In a preferred embodiment the diffusion dressing is used for diffusing oxygen into a wound.

Claims

1. A diffusion dressing comprising:

a paper liner;

a hydrocolloid layer;

a first adhesive layer;

a first barrier layer with a center cutout;

an oxygen release layer;

an absorbent layer;

a second barrier layer; and

a second adhesive layer with a center cutout.

2. The diffusion dressing of claim 1, used for diffusing oxygen into a wound.

3. The diffusion dressing of claim 1, wherein the paper liner is removed to expose the hydrocolloid layer before application.

4. The diffusion dressing of claim 1, used as a cover dressing for gauze, alginate, or hydrogel dressings.

5. The diffusion dressing of claim 1, wherein one or more of the layers is perforated to regulate diffusion rate.

6. The diffusion dressing of claim 1, wherein one or more of the layers is pre-treated with silver oxide.

7. The diffusion dressing of claim 1, wherein the paper liner and the hydrocolloid layer are perforated, the perforations symmetrically aligned between the layers.

8. The diffusion dressing of claim 7, wherein the perforations in the hydrocolloid layer are larger in diameter than the perorations in the paper liner.

9. The diffusion dressing of claim 1, vacuum evacuated and oxygen flushed within an oxygen barrier pouch before application.

10. The diffusion dressing of claim 1, wherein the first and second barrier layers form an oxygen reservoir.

11. A method for charging an oxygen hydrocolloid diffusion dressing comprising steps:

(a) placing the dressing inside a oxygen barrier pouch;

(b) vacuum evacuating the oxygen barrier pouch with the dressing inside;

(c) flushing the pouch with oxygen; and

(d) translating oxygen from the pouch into the reservoir of the dressing.

12. The method of claim 11, wherein the oxygen hydrocolloid dressing comprises a paper liner;

a hydrocolloid layer;

a first adhesive layer;

a first barrier layer with a center cutout;

an oxygen release layer;

an absorbent layer;

a second barrier layer; and

a second adhesive layer with a center cutout.

13. The method of claim 11, wherein in step (b), a vacuum sealing machine is used to evacuate and flush the pouch with oxygen.

14. The method of claim 12, wherein one or more of the layers is perforated to regulate diffusion rate.

15. The method of claim 12, wherein one or more of the layers is pre-treated with silver oxide.

16. The method of claim 12, wherein the paper liner and the hydrocolloid layer are perforated, the perforations symmetrically aligned between the layers.

17. The method of claim 12, wherein the perforations in the hydrocolloid layer are larger in diameter than the perorations in the paper liner.

18. The method of claim 12, wherein in step (d), gas from the pouch enters the reservoir of the dressing through one or more gas passages.