Granted Patent B2

US 12,329,614 · App. 17/420,983 · Granted Jun 17, 2025

Inventors: Timothy Mark Robinson (Shillingstone, GB); Christopher Brian Locke (Bournemouth, GB)

Assignee: Solventum Intellectual Properties Company

A61F13/05A61F13/0206A61L15/26A61L15/425A61M1/915A61F2013/00357A61M1/92A61M1/96

Abstract

Claims (41)

1. A dressing material, comprising:

a first layer comprising a first film of non-porous material having a plurality of openings;

a second layer adjacent to the first layer, the second layer comprising a manifold having a plurality of slits; and

a third layer adjacent to the second layer and comprising a second film of non-porous material having raised features, wherein the second layer is positioned between the first layer and the third layer;

wherein at least some of the plurality of openings, some of the plurality of slits, and some of the raised features are aligned to define a tear line, and wherein the raised features are overlaid upon the plurality of openings and the plurality of slits such that the raised features are configured to be torn along the tear line.

2. The dressing material of claim 1 , wherein the first film comprises a polyurethane material.

3. The dressing material of claim 1 , wherein the manifold comprises a porous foam including a plurality of interconnected fluid pathways defined by pores in the porous foam in addition to the plurality of slits, and wherein the plurality of slits comprise linear fenestrations disposed through a thickness of the porous foam.

4. The dressing material of claim 1 , wherein:

the first film comprises a polyurethane material; and

the second film comprises a polyurethane material.

5. The dressing material of claim 1 , wherein:

the plurality of openings and the plurality of slits are configured as pairs of aligned openings and slits.

6. The dressing material of claim 1 , wherein the first film is an adhesive-coated film.

7. The dressing material of claim 1 , wherein:

the plurality of openings are distributed across the first layer in parallel rows and columns; and

the rows are spaced about 3 mm on center.

8. The dressing material of claim 1 , wherein:

the plurality of openings are distributed across the first layer in parallel rows and columns;

the rows are spaced 3 mm on center; and

the openings in each of the rows are spaced about 3 mm on center.

9. The dressing material of claim 8 , wherein the plurality of openings in adjacent rows are offset.

10. The dressing material of claim 1 , wherein:

the second film is an adhesive-coated film; and

the second film is laminated to the second layer.

11. The dressing material of claim 1 , wherein the second film is a highly-breathable film.

12. The dressing material of claim 1 , wherein at least some of the plurality of openings, some of the plurality of slits, and some of the raised features are aligned in a linear pattern.

13. The dressing material of claim 1 , wherein at least some of the plurality of openings, some of the plurality of slits, and some of the raised features are aligned in a pattern having geometric shapes.

14. The dressing material of claim 13 , wherein the geometric shapes comprise one or more squares or circles.

15. A system for treating a tissue site, comprising:

a wound filler, comprising:

a first layer comprising a first film of non-porous material,

a second layer adjacent to the first layer, the second layer comprising porous foam,

a third layer adjacent to the second layer and comprising a second film of non-porous material having raised features, wherein the second layer is positioned between the first layer and the third layer, and

a plurality of fenestrations extending through the first layer and the second layer, wherein the plurality of fenestrations through the first layer are aligned with the plurality of fenestrations through the second layer, and wherein the raised features of the third layer are overlaid upon the plurality of fenestrations through the first layer and the second layer such that the raised features are configured to be torn along a tear line defined by the plurality of fenestrations;

a plurality of sealing strips adapted to be positioned over a perimeter of the third layer opposite the second layer; and

an interface adapted to be coupled to the wound filler.

16. The system of claim 15 , further comprising a negative-pressure source adapted to be fluidly connected to the wound filler through the interface.

17. The system of claim 15 , wherein:

the first film comprises a polyurethane material; and

the foam comprises a polyurethane foam.

18. The system of claim 15 , wherein each of the plurality of fenestrations is linear and has a length between 1 mm and 5 mm.

Assignments (3)

Continuity (2)

References Cited (203)