Extended stay-on wound dressing

• US 20050277860A1
• Filed: 06/14/2004
• Published: 12/15/2005
• Est. Priority Date: 06/14/2004
• Status: Abandoned Application

• Current Assignee: Jentec, Inc.
• Original Assignee: Jentec, Inc.
• Inventors: Jensen, Jarl B.
• Application Number:
  US10/867,388
• Publication Number:
  US 20050277860A1
• Time in Patent Office: Days
• US Class Current: 602/41
• CPC Class Codes: A61L 15/225 Mixtures of macromolecular compounds
• CPC Class Codes: A61L 15/585 Mixtures of macromolecular compounds

Abstract

A wound dressing having a dressing layer covered by protective cover layer and a release sheet. The dressing has an adhesive composition on a skin-contacting surface. The adhesive composition comprises a highly water-absorbable material (e.g. hydrocolloid), an acrylic adhesive and a tackifier. The composition provides extended stay-on capabilities. The composition also provides an adhesive that is removed from the skin with little pain to the on the skin.

Claims

1. A wound dressing comprising a dressing layer having a skin-contacting surface, the improvement comprising:

the dressing layer comprising;

20-60% by weight of a highly water-absorbable material;

5-60% by weight hot melt acrylic adhesive;

5-40% by weight tackifier;

5-30% elastomers;

5-30% by weight extender.

2. The dressing of claim 1 wherein the highly water-absorbable material is a hydrocolloid.

3. The dressing of claim 2 wherein the hydrocolloid is a material selected from the group consisting of:

calcium carboxymethylcellulose (“

CMC”

), pectin, gelatin, high molecular weight carbowax, carboxypolymethylene.

4. The dressing of claim 1 wherein the highly water-absorbable material is a material selected from the group consisting of:

polyacrylate, polyvinyl alcohol, polyvinyl pyrrolidone.

5. The dressing of claim 1 wherein the extender is paraffin oil.

6. The dressing of claim 1 wherein the extender is a material that functions as a plasticizer in combination with the elastomer.

7. The dressing of claim 1 wherein the tackifier is a hydrocarbon-based resin.

8. The dressing of claim 1 wherein the elastomer is a composition selected from the group consisting of Styrene-Olefin-Styrene, polyisobutylene, natural rubber, silicone rubber, arcylonitrile rubber, and polyurethane rubber.

9. The dressing of claim 1 wherein the dressing layer comprises:

50.5% CMC;

13.5% acrylic adhesive;

17% tackifier;

12% elastomer; and

8% extender.

10. The dressing claim 1 wherein the dressing later comprises:

38% CMC;

20% acrylic adhesive; and

20% tackifier.

11. The wound dressing of claim 1 further comprising:

a release sheet, and

a protective cover layer.

12. The wound dressing of claim 1 wherein the dressing layer has an inner hole.

13. A composition for application to wounds in a wound dressing comprising:

20-60% by weight of a highly water-absorbable material;

5-60% by weight hot melt acrylic adhesive;

5-40% by weight tackifier;

5-30% elastomers;

5-30% by weight extender.

14. The composition of claim 13 wherein the highly water-absorbable material is a hydrocolloid.

15. The composition of claim 14 wherein the hydrocolloid is a material selected from the group consisting of:

calcium carboxymethylcellulose (“

CMC”

), pectin, gelatin, high molecular weight carbowax, carboxypolymethylene.

16. The composition of claim 13 wherein the highly water-absorbable material is a material selected from the group consisting of:

polyacrylate, polyvinyl alcohol, polyvinyl pyrrolidone.

17. The composition of claim 13 wherein the extender is paraffin oil.

18. The composition of claim 13 wherein the extender is a material that functions as a plasticizer in combination with the elastomer.

19. The dressing of claim 13 wherein the tackifier is a hydrocarbon-based resin.

20. The dressing of claim 13 wherein the elastomer is a composition selected from the group consisting of Styrene-Olefin-Styrene, polyisobutylene, natural rubber, silicone rubber, arcylonitrile rubber, and polyurethane rubber.

21. A fixation device having an adhesive composition comprising:

20-60% by weight of a highly water-absorbable material;

5-60% by weight hot melt acrylic adhesive;

5-40% by weight tackifier;

5-30% elastomers;

5-30% by weight extender.

22. The fixation device of claim 21 wherein the highly water-absorbable material is a hydrocolloid.

23. The fixation device of claim 22 wherein the hydrocolloid is a material selected from the group consisting of:

calcium carboxymethylcellulose (“

CMC”

), pectin, gelatin, high molecular weight carbowax, carboxypolymethylene.

24. The fixation device of claim 21 wherein the highly water-absorbable material is a material selected from the group consisting of:

polyacrylate, polyvinyl alcohol, polyvinyl pyrrolidone.

25. The fixation device of claim 21 wherein the extender is paraffin oil.

26. The fixation device of claim 21 wherein the extender is a material that functions as a plasticizer in combination with the elastomer.

27. The fixation device of claim 21 wherein the tackifier is a hydrocarbon-based resin.

28. The fixation device of claim 21 wherein the elastomer is a composition selected from the group consisting of Styrene-Olefin-Styrene, polyisobutylene, natural rubber, silicone rubber, arcylonitrile rubber, and polyurethane rubber.

29. The fixation device of claim 21 wherein the dressing layer comprises:

50.5% CMC;

13.5% acrylic adhesive;

17% tackifier;

12% elastomer; and

8% extender.

30. The fixation device claim 21 wherein the dressing layer comprises:

38% CMC;

20% acrylic adhesive; and

20% tackifier.

31. The fixation device of claim 21 further comprising:

a release sheet, and

a protective cover layer.