IP Library › Granted Patent US 12,324,729
Granted Patent B2
US 12,324,729 · App. 18/635,828 · Granted Jun 10, 2025

Negative pressure wound treatment apparatuses and methods with integrated electronics

Inventors: Michael Earl (York, GB); Frederick Jethro Harrison (Cambridge, GB); William Kelbie (Inverness, GB); Reece Knight (Kingston upon Hull, GB); David Peter Lloyd (North Ferriby, GB); Joseph William Robinson (Papworth Everard, GB); Daniel Lee Steward (Hull, GB); Grant West (Luton, GB)
Assignee: Smith & Nephew PLC
A61F13/05A61F13/00059A61M1/732A61M1/90A61M1/915A61M1/962A61M1/964A61M1/966A61M39/24A61M2205/3306A61M2205/3344A61M2205/3368A61M2205/50A61M2205/582A61M2205/583A61M2205/587A61M2205/7518A61M2205/8206
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Quick Facts
Patent No.
US 12,324,729
App. No.
18/635,828
Filed
Apr 15, 2024
Granted
Jun 10, 2025
Kind
B2
Art Unit
3781
USPC
604/319
Abstract

Disclosed herein are embodiments of a wound treatment apparatus with electronic components integrated within a wound dressing. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, an absorbent layer over the wound contact layer, the absorbent layer comprising one or more apertures, a cover layer configured to cover and form a seal over the wound contact layer and the absorbent layer, and an electronics assembly comprising a negative pressure source. A portion of the cover layer overlying the one or more apertures in the absorbent layer can be configured to be compressed within the aperture in the absorbent layer when negative pressure is applied to the wound dressing apparatus. The compressed cover layer can indicate a level of negative pressure below the cover layer. In some embodiments, the wound dressing apparatus can comprise an indicator material layer and a cover layer configured to cover and form a seal over the wound contact layer and the indicator material layer. The indicator material layer can be configured to protrude relative to a surrounding surface of an upper surface of the wound dressing apparatus when negative pressure is applied to the wound dressing apparatus and the protruding indicator material layer indicates a level of negative pressure below the cover layer.

Claims (37)

1. A wound dressing apparatus comprising:

a wound dressing comprising:

a first layer comprising a proximal wound-facing face, a distal face opposite the proximal wound-facing face, and one or more apertures;

a cover layer configured to cover and form a seal over a wound and the first layer; and

a non-adhesive layer positioned beneath the proximal wound-facing face of the first layer when negative pressure is applied;

wherein a portion of the cover layer overlying the one or more apertures in the first layer is configured to be compressed within the one or more apertures in the first layer and contact the non-adhesive layer when negative pressure is applied to the wound dressing apparatus;

wherein the compressed cover layer indicates a level of negative pressure below the cover layer.

2. The wound dressing apparatus of claim 1 , the wound dressing further comprising a wound contact layer comprising a proximal wound-facing face and a distal face, the wound contact layer beneath the proximal wound-facing face of the first layer, wherein the proximal wound-facing face of the wound contact layer is configured to be positioned in contact with a wound.

3. The wound dressing apparatus of claim 2 , wherein the non-adhesive layer is configured to prevent the cover layer from remaining fixed in a compressed position within the one or more apertures.

4. The wound dressing apparatus of claim 1 , further comprising an electronics assembly comprising a negative pressure source.

5. The wound dressing apparatus of claim 4 , wherein the negative pressure source is positioned within the wound dressing.

6. The wound dressing apparatus of claim 4 , wherein the one or more apertures are positioned in a portion of the first layer adjacent to the electronics assembly.

7. The wound dressing apparatus of claim 1 , wherein the compressed cover layer is configured to provide a visual or a tactile indication of negative pressure.

8. The wound dressing apparatus of claim 1 , the wound dressing further comprising a transmission layer comprising a proximal wound-facing face and a distal face, the transmission layer positioned beneath the proximal wound-facing face of the first layer.

9. The wound dressing apparatus of claim 1 , wherein the one or more apertures in the first layer comprise an array of apertures.

10. The wound dressing apparatus of claim 1 , wherein the portion of the cover layer overlaying the one or more apertures in the first layer is further configured to be decompressed when the wound dressing apparatus is under ambient pressure.

11. A method of treating a wound with negative pressure, the method comprising:

applying a wound dressing over the wound, the wound dressing comprising:

a first layer comprising a proximal wound-facing face, a distal face opposite the proximal wound-facing face, and one or more apertures;

a cover layer configured to cover and form a seal over a wound and the first layer; and

a non-adhesive layer positioned beneath the proximal wound-facing face of the first layer when negative pressure is applied;

applying negative pressure to a wound dressing apparatus which causes a portion of the cover layer overlying the one or more apertures in the first layer to be compressed within the one or more apertures in the first layer and contact the non-adhesive layer, wherein the compressed cover layer indicates a level of negative pressure below the cover layer.

12. The method of claim 11 , the wound dressing further comprising a wound contact layer comprising a proximal wound-facing face and a distal face, the wound contact layer beneath the proximal wound-facing face of the first layer, wherein the proximal wound-facing face of the wound contact layer is configured to be positioned in contact with a wound.

13. The method of claim 11 , wherein the non-adhesive layer prevents the cover layer from remaining fixed in a compressed position within the one or more apertures.

14. The method of claim 11 , further comprising an electronics assembly comprising a negative pressure source.

15. The method of claim 14 , wherein the negative pressure source is positioned within the wound dressing.

16. The method of claim 11 , wherein the compressed cover layer provides a visual or a tactile indication of negative pressure.

17. The method of claim 11 , wherein the portion of the cover layer overlaying the one or more apertures in the first layer is further configured to be decompressed when the wound dressing apparatus is under ambient pressure.

18. A wound dressing apparatus comprising:

a wound dressing comprising:

a first layer comprising a proximal wound-facing face, a distal face opposite the proximal wound-facing face;

a cover layer configured to cover and form a seal over a wound and the first layer, the cover layer comprising one or more indicator portions, wherein the one or more indicator portions have a first raised position and a second compressed position; and

a non-adhesive layer positioned beneath the cover layer when negative pressure is applied;

wherein a portion of the cover layer comprising the one or more indicator portions are configured to be compressed from a first raised position to a second compressed position and wherein the one or more indicator portions of the cover layer are configured to contact the non-adhesive layer when negative pressure is applied to the wound dressing apparatus;

wherein the one or more indicator portions of the compressed cover layer indicates a level of negative pressure below the cover layer in the second compressed position.

19. The wound dressing apparatus of claim 18 , further comprising an electronics assembly comprising a negative pressure source.

20. The wound dressing apparatus of claim 18 , wherein the second compressed position is configured to provide a visual or a tactile indication of negative pressure.

Priority Claims (2)
GB 1718070 · Nov 1, 2017 · national
GB 1805582 · Apr 5, 2018 · national
Continuity (3)
Continuation 17985051 · Nov 10, 2022
Continuation 16760162
Related Publication 20240342009A1 · Oct 17, 2024
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