IP Library › Granted Patent US 12,419,788
Granted Patent B2
US 12,419,788 · App. 17/372,252 · Granted Sep 23, 2025

Wound dressing and method of use

Inventors: Gordon Campbell Adie (Cottingham, GB); Sarah Jenny Collinson (Hull, GB); Christopher John Fryer (York, GB); Edward Yerbury Hartwell (Hull, GB); Derek Nicolini (Hull, GB); Yannick Louis Peron (East Yorkshire, GB)
Assignee: Smith & Nephew PLC
A61F13/05A61F13/0206A61F13/0209A61F13/022A61M1/913A61M1/915A61M1/985A61F2013/00174A61F2013/00238A61F2013/00536A61F2013/0054A61F13/01012A61M1/912A61M1/916A61M1/918A61M1/962A61M2202/0014A61M2205/7536
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Quick Facts
Patent No.
US 12,419,788
App. No.
17/372,252
Granted
Sep 23, 2025
Kind
B2
Abstract

A system, method, and apparatus are disclosed for dressing a wound. The apparatus comprises a liquid and gas permeable transmission layer, an absorbent layer for absorbing wound exudate, the absorbent layer overlying the transmission layer, a gas impermeable cover layer overlying the absorbent layer and comprising a first orifice, wherein the cover layer is moisture vapor permeable.

Claims (25)

1. A wound therapy device, comprising:

a moisture vapor permeable cover layer configured to cover a wound area and an area of body surface adjacent the wound area at least partially enclosing the wound area;

a protective layer positioned beneath the cover layer and overlying a transmission layer, the protective layer configured to provide stiffness to the wound therapy device and protect the cover layer from the transmission layer, wherein the protective layer is larger than the transmission layer, the transmission layer configured to overlie the wound area and the area of body surface adjacent the wound area at least partially enclosing the wound area, the transmission layer comprising fibers; and

a wound contact layer comprising a silicone adhesive and positioned beneath the transmission layer and the protective layer, the wound contact layer configured to overlie the wound area and the area of body surface adjacent the wound area at least partially enclosing the wound area,

wherein a portion of an upper outer layer of the transmission layer comprises a first filament count and a portion of a lower outer layer of the transmission layer comprises a second filament count, wherein the first filament count is greater than the second filament count,

wherein the upper outer layer configured to wick more fluid than the lower outer layer, and

wherein the upper outer layer of the transmission layer is separated from the lower outer layer by a plurality of fiber spacer elements extending perpendicularly between the upper outer layer and the lower outer layer.

2. The wound therapy device of claim 1 , wherein the transmission layer is configured to horizontally wick fluid.

3. The wound therapy device of claim 1 , wherein the transmission layer comprises a knitted layer of at least partially elastomeric material.

4. The wound therapy device of claim 1 , wherein the transmission layer comprises a 3D fabric material.

5. The wound therapy device of claim 1 , wherein the cover layer comprises an orifice.

6. The wound therapy device of claim 5 , further comprising a suction port connectable to a source of negative pressure, the suction port positioned above the orifice.

7. The wound therapy device of claim 6 , wherein the suction port further comprises:

a connector portion configured to connect the suction port to a source of negative pressure; and

a sealing surface for sealing the suction port to the cover layer.

8. The wound therapy device of claim 7 , wherein the suction port is sealed to the cover layer with an adhesive.

9. The wound therapy device of claim 8 , wherein the adhesive comprises an adhesive selected from the group consisting of an acrylic, cyanoacrylate, epoxy, a UV curable, and a hot melt adhesive.

10. The wound therapy device of claim 6 , wherein the source of negative pressure comprises a vacuum pump.

11. The wound therapy device of claim 6 , wherein the suction port is formed from a transparent material.

12. The wound therapy device of claim 1 , wherein the protective layer further comprises superabsorbent material.

13. The wound therapy device of claim 1 , wherein the protective layer is in direct contact with the cover layer.

14. The wound therapy device of claim 1 , wherein the protective layer comprises an absorbent material, and wherein the wound therapy device further comprises a through-hole extending through the protective layer and the cover layer.

15. The wound therapy device of claim 1 , wherein the protective layer comprises foam.

16. The wound therapy device of claim 1 , wherein the protective layer comprises a non-woven material.

17. The wound therapy device of claim 1 , wherein the protective layer comprises an airlaid material.

Priority Claims (5)
GB 1006983 · Apr 27, 2010 · national
GB 1006985 · Apr 27, 2010 · national
GB 1006986 · Apr 27, 2010 · national
GB 1006988 · Apr 27, 2010 · national
GB 1008347 · May 19, 2010 · national
Continuity (5)
Continuation 16118339 · Aug 30, 2018
Continuation 15633670 · Jun 26, 2017
Continuation 14715399 · May 18, 2015
Continuation 13092042 · Apr 21, 2011
Related Publication 20220000670A1 · Jan 6, 2022
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