Hybrid drape having a gel-coated perforated mesh

Patent metadata

Field	Value
Publication number	US-10632020-B2
Application number	US-201514619714-A
Country	US
Kind code	B2
Filing date	Feb 11, 2015
Priority date	Feb 28, 2014
Publication date	Apr 28, 2020
Grant date	Apr 28, 2020

Abstract

A system for treating a tissue site with negative-pressure is described. The system includes a manifold configured to be positioned adjacent to the tissue site and a drape configured to be positioned over the tissue site and the manifold to form a sealed space. The system also includes a negative-pressure source configured to provide negative-pressure to the sealed space. The drape includes a film layer, a layer of a bonding adhesive coupled to the film layer, and a mesh coupled to the layer of the bonding adhesive. The mesh includes a coating of a sealing adhesive and one or more bonding apertures. Methods of manufacturing the drape are also described.

First claim

We claim:

1. A dressing for treating a tissue site with negative pressure, the dressing comprising:
a manifold configured to be positioned adjacent to the tissue site, the manifold having a plurality of pathways configured to distribute negative pressure across the tissue site; and
a sealing member configured to be positioned over the tissue interface and the tissue site to form a sealed environment, the sealing member comprising:
a film layer having a first side and a second side,
a layer of a bonding adhesive having a first side coupled to the second side of the film layer and a second side, and
a mesh coupled to the second side of the layer of the bonding adhesive, the mesh having a coating of a sealing adhesive and one or more bonding apertures,
wherein the film layer, the layer of the bonding adhesive, and the mesh are congruent layers and the layer of the bonding adhesive separates the film layer from the mesh.

2. The dressing of claim 1 , wherein the mesh comprises a plurality of fibers connected to form intersections.

3. The dressing of claim 2 , wherein each intersection of the fibers is substantially flat.

4. The dressing of claim 2 , wherein a prominence of the fibers at each intersection is less than about 1 millimeter.

5. The dressing of claim 2 , wherein the fibers are woven.

6. The dressing of claim 2 , wherein the fibers are knitted.

7. The dressing of claim 2 , wherein the fibers are extruded and are substantially planar at each intersection.

8. The dressing of claim 2 , wherein a diameter of each fiber of the plurality of fibers is less than about 1 millimeter.

9. The dressing of claim 2 , wherein each fiber of the plurality of fibers is a monofilament.

10. The dressing of claim 2 , wherein each fiber of the plurality of fibers is a plurality of twisted monofilaments.

11. The dressing of claim 2 , wherein each fiber of the plurality of fibers is a plurality of staple fibers.

12. The dressing of claim 1 , wherein the mesh has a plurality of mesh apertures.

13. The dressing of claim 12 , wherein an effective diameter of each mesh aperture is between about 0.5 millimeters and about 4 millimeter.

14. The dressing of claim 1 , wherein a coating weight of the coating of the sealing adhesive is between about 100 grams per square meter and about 500 grams per square meter.

15. The dressing of claim 1 , wherein an effective diameter of each bonding aperture is between about 5 millimeter and about 15 millimeter.

16. The dressing of claim 1 , wherein the mesh comprises a polymeric mesh.

17. The dressing of claim 1 , wherein:
the film layer comprises a polyurethane film having a thickness between about 15 microns and about 50 microns;
the bonding adhesive comprises an acrylic adhesive having a coating weight between about 15 grams per square meter and about 70 grams per square meter;
the mesh comprises a silicone mesh having mesh apertures with an effective diameter between about 0.5 millimeters and about 4.5 millimeters; and
the sealing adhesive comprises a silicone gel adhesive having a coating weight between about 100 grams per square meter and about 500 grams per square meter.

18. A system for treating a tissue site with negative-pressure, the system comprising:
a manifold configured to be positioned adjacent to the tissue site, the manifold having a plurality of pathways configured to distribute negative pressure across the tissue site;
a drape configured to be positioned over the tissue site and the manifold to form a sealed space; and
a negative-pressure source configured to provide negative-pressure to the sealed space;
wherein the drape comprises:
a film layer having a first side and a second side,
a layer of a bonding adhesive having a first side coupled to the film layer and a second side,
a mesh coupled to the second side of the layer of the bonding adhesive, the mesh having a coating of a sealing adhesive and one or more bonding apertures,
wherein the film layer, the layer of the bonding adhesive, and the mesh are congruent layers and the layer of the bonding adhesive separates the film layer from the mesh.

19. The system of claim 18 , wherein the mesh comprises a plurality of fibers connected to form intersections.

20. The system of claim 19 , wherein each intersection of the fibers is substantially flat.

21. The system of claim 19 , wherein a prominence of the fibers at each intersection is less than about 1 millimeter.

22. The system of claim 19 , wherein the fibers are woven.

23. The system of claim 19 , wherein the fibers are knitted.

24. The system of claim 19 , wherein the fibers are extruded and are substantially planar at each intersection.

25. The system of claim 19 , wherein a diameter of each fiber of the plurality of fibers is less than about 1 millimeter.

26. The system of claim 19 , wherein each fiber of the plurality of fibers is a monofilament.

27. The system of claim 19 , wherein each fiber of the plurality of fibers is a plurality of twisted monofilaments.

28. The system of claim 19 , wherein each fiber of the plurality of fibers is a plurality of staple fibers.

29. The system of claim 18 , wherein the mesh has a plurality of mesh apertures.

30. The system of claim 29 , wherein an effective diameter of each mesh aperture is between about 0.5 millimeter and about 4 millimeter.

31. The system of claim 18 , wherein a coating weight of the coating of the sealing adhesive is between about 100 grams per square meter and about 500 grams per square meter.

32. The system of claim 18 , wherein an effective diameter of each bonding aperture is between about 5 millimeter and about 15 millimeter.

33. The system of claim 18 , wherein the mesh comprises a polymeric mesh.

34. The system of claim 18 , wherein:
the film layer comprises a polyurethane film having a thickness between about 15 microns and about 50 microns;
the bonding adhesive comprises an acrylic adhesive having a coating weight between about 15 grams per square meter and about 70 grams per square meter;
the mesh comprises a silicone mesh having mesh apertures with an effective diameter between about 0.5 millimeters and about 4.5 millimeters; and
the sealing adhesive comprises a silicone gel adhesive having a coating weight between about 100 grams per square meter and about 500 grams per square meter.

Assignees

• Kci Licensing Inc

Inventors

• Locke Christopher Brian
• Robinson Timothy Mark

Classifications

• A61L15/58

  Adhesives · CPC title

• A61F13/0253

  characterized by the adhesive material · CPC title

• A61F13/0283

  for making adhesive or cohesive tape or fabrics therefor, e.g. coating or mechanical treatments · CPC title

• A61F13/025 Primary

  having a special distribution arrangement of the adhesive · CPC title

• Y10T156/1062

  Prior to assembly · CPC title