Devices and methods for dressing applicators

• US 8,592,640 B2
• Filed: 08/11/2010
• Issued: 11/26/2013
• Est. Priority Date: 08/11/2009
• Status: Active Grant

• Current Assignee: Neodyne Biosciences, Inc.
• Original Assignee: Neodyne Biosciences, Inc.
• Inventors: Zepeda, John A., Jackson, Jasper, Beasley, William R., Doud, Darren G., Follmer, Brett A.
• Primary Examiner(s): Lewis, Kim M
• Application Number:
  US12/854,859
• Publication Number:
  US 20110152738A1
• Time in Patent Office: 1,203 Days
• Field of Search: 602 41- 59, 606213-216
• US Class Current: 602/58
• CPC Class Codes: A61B 17/08 Wound clamps or clips, i.e. not or only partly penetrating the tissue suture bridges A61B17/0466; Devices for bringing together the edges of a wound
• CPC Class Codes: A61B 17/085 with adhesive layer
• CPC Class Codes: A61B 90/02 Devices for expanding tissue, e.g. skin tissue implements for holding wounds open, surgical tractors A61B17/02; implantable mammary prosthesis A61F2/12; dilators A61M29/00
• CPC Class Codes: A61F 13/00076 Packaging of adhesive dressings
• CPC Class Codes: A61F 13/00085 having means for facilitating the application on the skin, e.g. single hand handling facilities A61F13/0259 takes precedence; bandage applicators separate from the bandage or the packaging A61F15/005
• CPC Class Codes: A61F 13/01038 Flexibility, stretchability or elasticity
• CPC Class Codes: A61F 13/023 wound covering film layers without a fluid retention layer
• CPC Class Codes: A61F 13/0236 characterised by the application/handling support layer
• CPC Class Codes: A61F 13/0243 characterised by the properties of the skin contacting layer, e.g. air-vapor permeability
• CPC Class Codes: A61F 13/0246 characterised by the skin-adhering layer
• CPC Class Codes: A61F 13/0253 characterized by the adhesive material
• CPC Class Codes: A61F 13/0256 characterized by the parametric properties of the adhesive
• CPC Class Codes: A61F 13/0259 characterised by the release liner covering the skin adhering layer
• CPC Class Codes: A61F 13/0266 especially adapted for wound covering/occlusive dressings
• CPC Class Codes: A61F 15/001 Packages or dispensers for bandages, cotton balls, drapes, dressings, gauze, gowns, sheets, sponges, swabsticks or towels A61F15/007 takes precedence
• CPC Class Codes: A61F 15/005 Bandage applicators
• 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: C08L 83/04 Polysiloxanes

Abstract

Devices, kits and methods described herein may be for wound healing, including the treatment, amelioration, or prevention of scars and/or keloids by applying and/or maintaining a predetermined strain in an elastic skin treatment device that is then affixed to the skin surface using skin adhesives to transfer a generally planar force from the bandage to the skin surface. Applicators are used to apply and/or maintain the strains, and some of the applicators are further configured to provide at least some mechanical advantage to the user when exerting loads onto the skin treatment device.

Claims

1. A wound dressing, comprising:

an elastic sheet structure, comprising;

a first edge; and

a second edge opposite the first edge;

an inner skin adhesive region positioned between the first edge and second edge and configured to be applied to an epidermal layer of skin;

a first tensioning device attachment member, comprising a first protrusion from the sheet structure and located between the first edge and the inner adhesive region; and

a second tensioning device attachment member, comprising a second protrusion from the sheet structure; and

located between the second edge and the inner adhesive region;

wherein at least one of the first protrusion and second protrusion comprises at least one pocket.

2. The wound dressing of claim 1, wherein at least one of the first protrusion and second protrusion comprises a separate sheet of material.

3. The wound dressing of claim 1, wherein the wound dressing further comprises perforations configured to facilitate separation of the inner skin adhesive region.

4. The wound dressing of claim 1, wherein the first protrusion comprises at least one pocket and the second protrusion comprises at least one pocket.

5. A wound dressing, comprising:

an elastic sheet structure, comprising;

a first edge; and

a second edge opposite the first edge;

an inner skin adhesive region positioned between the first edge and second edge and configured to be applied to an epidermal layer of skin;

a first tensioning device attachment member comprising a first protrusion from the sheet structure and located between the first edge and the inner skin adhesive region;

a second tensioning device attachment member comprising a second protrusion from the sheet structure, and located between the second edge and the inner skin adhesive region; and

wherein the first tensioning device attachment member is spaced from the first edge and the second tensioning device attachment member is spaced from the second edge.

6. The wound dressing of claim 5, wherein the inner skin adhesive region comprises a pressure sensitive silicone adhesive with a release force of at least about 240 kg/m.

7. The wound dressing of claim 5, wherein the inner skin adhesive region comprises a pressure sensitive silicone adhesive with a release force of at least about 270 kg/m.

8. The wound dressing of claim 5, wherein the inner skin adhesive region comprises a pressure sensitive silicone adhesive with a release force of at least about 300 kg/m.

9. The wound dressing of claim 5, wherein the inner skin adhesive region comprises a pressure sensitive silicone adhesive with a release force of at least about 330 kg/m.

10. The wound dressing of claim 5, wherein the first tensioning device attachment member and second tensioning device attachment member are configured to receive a load to strain the sheet structure to an engineering strain of 40% with a force of at least about 0.25 Newtons per mm width of a first sheet of material.

11. The wound dressing of claim 5, wherein the first tensioning device attachment member and second tensioning device attachment member are configured to receive a load to strain the elastic sheet structure to an engineering strain of 40% with a force up to about 1 Newtons per mm width of the elastic sheet structure.

12. The wound dressing of claim 11, wherein the load to strain the elastic sheet structure to an engineering strain of 40% is no greater than about 0.5 Newton per mm width of the elastic sheet structure.

13. The wound dressing of claim 12, wherein the load to strain the elastic sheet structure to an engineering strain of 60% is no greater than about 1 Newton per mm width of the elastic sheet structure.

14. The wound dressing of claim 5, wherein the first tensioning device attachment member and second tensioning device attachment member are configured to receive a load to strain the elastic sheet structure to an engineering strain of 60% with a force of at least 0.35 Newton per mm width of the elastic sheet structure.

15. The wound dressing of claim 5, wherein the elastic sheet structure has a load per width of at least 0.35 Newtons per mm at an engineering strain of 60%.

16. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width of no greater than about 2 Newtons per mm at the engineering strain of 60%.

17. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width of no greater than about 1 Newtons per mm at the engineering strain of 60%.

18. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width of no greater than about 0.7 Newtons per mm at the engineering strain of 60%.

19. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width of no greater than about 0.5 Newtons per mm at the engineering strain of 60%.

20. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width that does not decrease from the engineering strain of 0% to 60%.

21. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width plot that increases linearly from a true strain of 0% to 60%.

22. The wound dressing of claim 15, wherein the elastic sheet structure has a load per width plot that is not convex from a true strain of 0% to 60%.

23. The wound dressing of claim 15, wherein the inner skin adhesive region comprises a skin adhesive configured to maintain a substantially constant stress in a range of 200 kPa to about 500 kPa for at least 8 hours when strained to an engineering strain of 30% and attached to a surface.

24. The wound dressing of claim 15, wherein the inner skin adhesive region comprises a skin adhesive configured to maintain a substantially constant stress in a range of 200 kPa to about 400 kPa for at least 8 hours when strained to an engineering strain of 30% and attached to a surface.

25. The wound dressing of claim 24, wherein the substantially constant stress varies by less than 10% over at least 8 hours.

26. The wound dressing of claim 24, wherein the substantially constant stress varies by less than 5% over at least 8 hours.

27. The wound dressing of claim 5, wherein the wound dressing further comprises perforations configured to facilitate separation of the inner skin adhesive region.