Dressing with bolster for linear tissue sites

Patent metadata

Field	Value
Publication number	US-11452640-B2
Application number	US-201916254340-A
Country	US
Kind code	B2
Filing date	Jan 22, 2019
Priority date	Feb 23, 2018
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

Dressings for closing an opening through a surface of a tissue site are described. The dressing includes a cover adapted to form a sealed space over the opening and a bolster. The bolster is adapted to be positioned adjacent the opening and includes a first plurality of holes. The holes have an average width to length ratio causing the plurality of holes to collapse in a direction substantially perpendicular to the opening. Systems, apparatuses, kits and methods including and/or using the dressing for closing the opening are also described.

First claim

What is claimed is:

1. A dressing for closing an opening through a surface of a tissue site, the dressing comprising:
a cover adapted to form a sealed space over the opening;
a bolster having a first surface and a second surface and adapted to be positioned adjacent to the opening, wherein the bolster comprises a first layer defining the first surface, a second layer defining the second surface, the first layer coupled to the second layer, and a first plurality of holes extending through at least a portion of the first layer and the second layer of the bolster, wherein the first plurality of holes have an average width to length ratio less than or equal to 0.50; and
a top layer adjacent to the first surface of the bolster, the top layer comprising a third plurality of holes extending through at least a portion of the top layer, the third plurality of holes substantially adjacent to the first plurality of holes.

2. The dressing of claim 1 , wherein the bolster has a thickness less than or equal to 6.0 mm.

3. The dressing of claim 1 , wherein the bolster has a thickness of about 1.0 mm to 6.0 mm.

4. The dressing of claim 1 , wherein the bolster is hydrophilic or hydrophobic.

5. The dressing of claim 1 , wherein at least a portion of the bolster is porous or non-porous.

6. The dressing of claim 1 , wherein the bolster comprises a material selected from the group consisting of a nonwoven material and a polymer.

7. The dressing of claim 6 , wherein the polymer is a foam.

8. The dressing of claim 7 , wherein the foam is a compressed foam.

9. The dressing of claim 1 , wherein the first plurality of holes have an average width to length ratio of 0.05 to 0.50.

10. The dressing of claim 1 , wherein at least a portion of the first plurality of holes have a depth less than a thickness of the bolster.

11. The dressing of claim 1 , wherein each of the holes of the first plurality of holes have a shape selected from a group consisting of hexagonal, elliptical, oval, rhombus, rhomboid, trapezoidal, rectangular, triangular, conical and a combination thereof.

12. The dressing of claim 1 , wherein the first plurality of holes are present in an array.

13. The dressing of claim 12 , wherein the array comprises two or more parallel rows.

14. The dressing of claim 1 , further comprising a protective layer adjacent to the second surface of the bolster and adapted to be adjacent to the opening, wherein the protective layer comprises a second plurality of holes extending through at least a portion of the protective layer, wherein the second plurality of holes are substantially adjacent to the first plurality of holes.

15. The dressing of claim 14 , wherein the second plurality of holes have an average effective diameter less than or equal to an average effective diameter of the first plurality of holes.

16. The dressing of claim 14 , wherein each of the holes of the second plurality of holes have a shape selected from a group consisting of a slit, a slot, hexagonal, elliptical, oval, rhombus, rhomboid, trapezoidal, rectangular, triangular, conical and a combination thereof.

17. The dressing of claim 16 , wherein the shape of each of the holes of the second plurality of holes is the same or different than a shape of each of the holes of the first plurality of holes.

18. The dressing of claim 14 , wherein the protective layer comprises a material selected from the group consisting of a mesh, a film, a woven material, and a non-woven material.

19. The dressing of claim 1 , wherein the dressing is configured to close the opening of a linear wound.

20. The dressing of claim 19 , wherein the dressing is configured to close the opening of the linear wound on an abdomen of a patient.

21. A system for closing an opening through a surface of a tissue site, the system comprising:
the dressing of claim 1 ; and
a negative-pressure source adapted to be fluidly coupled to the dressing.

22. A dressing kit comprising:
a bolster comprising a first surface, a second surface, a first layer defining the first surface, a second layer defining the second surface, the first layer coupled to the second layer, and a first plurality of holes extending through at least a portion of the first layer and the second layer, wherein the holes have an average width to length ratio less than or equal to 0.50 and the bolster has a thickness of less than or equal to 6.0 mm;
a cover, wherein the cover is separate from the bolster or adjacent to the first surface of the bolster;
a protective layer comprising a second plurality of holes extending through at least a portion of the protective layer, wherein the protective layer is separate from the bolster or adjacent to the second surface of the bolster and the second plurality of holes are substantially adjacent to the first plurality of holes; and
a top layer, wherein the top layer is separate from the bolster or adjacent to the first surface of the bolster, the top layer comprising a third plurality of holes extending through at least a portion of the top layer, the third plurality of holes substantially adjacent to the first plurality of holes.

23. A dressing for closing an opening through a surface of a tissue site, the dressing comprising:
a cover adapted to form a sealed space over the opening;
a bolster having a first surface and a second surface and adapted to be positioned adjacent to the opening, wherein the bolster comprises a first layer defining the first surface, a second layer defining the second surface, the first layer coupled to the second layer, and a first plurality of holes extending through at least a portion of the first layer and the second layer, wherein the holes have an average width to length ratio 0.050 to 0.50, the bolster has a thickness of 1.0 mm to 6.0 mm, and the bolster comprises a non-woven material or a compressed foam; and
a top layer adjacent to the first surface of the bolster, the top layer comprising a third plurality of holes extending through at least a portion of the top layer, the third plurality of holes substantially adjacent to the first plurality of holes.

Assignees

• Kci Licensing Inc

Inventors

• Long Justin Alexander
• Robinson Timothy Mark
• Locke Christopher Brian

Classifications

• A61M1/916

  specially adapted for deep wounds · CPC title

• A61M1/915

  Constructional details of the pressure distribution manifold · CPC title

• A61M27/00

  Drainage appliance for wounds or the like {, i.e. wound drains, implanted drains} ({negative pressure wound therapy devices A61M1/90;} implements for holding wound open A61B17/02 {; middle ear drainage A61F11/202}) · CPC title

• A61M1/70

  Gravity drainage systems (drainage containers not being adapted for subjection to vacuum A61M1/69) · CPC title

• A61F2013/00174

  possibility of applying pressure · CPC title