IP Library › Granted Patent US 12,414,877
Granted Patent B2
US 12,414,877 · App. 17/565,346 · Granted Sep 16, 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 12,414,877
App. No.
17/565,346
Granted
Sep 16, 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 (26)

1. A wound treatment apparatus comprising a wound dressing, the wound dressing comprising:

a transmission layer comprising an upper sub-layer and a lower sub-layer spaced apart from the upper sub-layer by a plurality of generally perpendicular spacer elements, wherein the upper sub-layer comprises a first plurality of openings and the lower sub-layer comprises a second plurality of openings, and wherein the first plurality of openings has a larger open area than the second plurality of openings;

a gas impermeable cover layer positioned over the transmission layer; and

a wound contact layer positioned beneath the transmission layer.

2. The wound treatment apparatus of claim 1 , wherein the cover layer comprises a fluid passage.

3. The wound treatment apparatus of claim 1 , wherein the wound contact layer comprises a plurality of apertures.

4. The wound treatment apparatus of claim 3 , wherein the wound contact layer comprises a silicone adhesive.

5. The wound treatment apparatus of claim 4 , wherein the wound contact layer is configured to be positioned over an area adjacent a wound.

6. The wound treatment apparatus of claim 1 , wherein the upper sub-layer of the transmission layer comprises a first filament count and the lower sub-layer of the transmission layer comprises a second filament count, wherein the first filament count is greater than the second filament count.

7. The wound treatment apparatus of claim 1 , wherein the transmission layer comprises fiber elements extending laterally between the upper sub-layer and the lower sub-layer of the transmission layer.

8. The wound treatment apparatus of claim 1 , wherein the transmission layer comprises a knitted layer of at least partially elastomeric material.

9. The wound treatment apparatus of claim 1 , wherein the transmission layer comprises a 3D fabric material.

10. The wound treatment apparatus of claim 1 , further comprising a source of negative pressure.

11. The wound treatment apparatus of claim 10 , wherein the source of negative pressure comprises a vacuum pump.

12. A wound treatment apparatus comprising:

a vacuum pump;

a wound dressing, the wound dressing comprising a gas impermeable cover layer comprising a fluid passage and a transmission layer below the cover layer, the transmission layer comprising an upper layer and a lower layer spaced apart from the upper layer by a plurality of generally perpendicular spacer elements, the upper layer comprising a first plurality of openings and the lower layer comprising a second plurality of openings, the first plurality of openings having a larger open area than the second plurality of openings; and

a suction port connectable to the vacuum pump, the suction port configured to be positioned above the fluid passage and comprising a connector portion configured to fluidly connect the suction port to the vacuum pump.

13. The wound treatment apparatus of claim 12 , further comprising a wound contact layer positioned beneath the transmission layer and configured to be positioned over an area adjacent a wound.

14. The wound treatment apparatus of claim 13 , wherein the wound contact layer comprises a plurality of apertures and a silicone adhesive.

15. The wound treatment apparatus of claim 12 , wherein the upper layer of the transmission layer comprises a first filament count and the lower layer of the transmission layer comprises a second filament count, wherein the first filament count is greater than the second filament count.

16. The wound treatment apparatus of claim 12 , wherein the transmission layer comprises fiber elements extending laterally between the upper layer and the lower layer of the transmission layer.

17. The wound treatment apparatus of claim 12 , wherein the transmission layer comprises a knitted layer of at least partially elastomeric material.

18. The wound treatment apparatus of claim 12 , wherein the transmission layer comprises a 3D fabric material.

19. The wound treatment apparatus of claim 12 , further comprising an absorbent layer below the cover layer.

20. The wound treatment apparatus of claim 19 , further comprising a through-hole extending through the cover layer and the absorbent layer.

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 (6)
Continuation 17372252 · Jul 9, 2021
Continuation 16118339 · Aug 30, 2018
Continuation 15633670 · Jun 26, 2017
Continuation 14715399 · May 18, 2015
Continuation 13092042 · Apr 21, 2011
Related Publication 20220117796A1 · Apr 21, 2022
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