Wound treatment apparatuses and methods with negative pressure source integrated into wound dressing

Patent metadata

Field	Value
Publication number	US-12396895-B2
Application number	US-202318207601-A
Country	US
Kind code	B2
Filing date	Jun 8, 2023
Priority date	Mar 7, 2016
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a negative pressure source is incorporated into a wound dressing apparatus so that the wound dressing and the negative pressure source are part of an integral or integrated wound dressing structure that applies the wound dressing and the negative pressure source simultaneously to a patient's wound. The negative pressure source and/or electronic components may be positioned between a wound contact layer and a cover layer of the wound dressing. The negative pressure source and/or electronic components may be separated and/or partitioned from an absorbent area of the dressing. A switch may be integrated with the wound dressing to control operation of the wound dressing apparatus. A connector may be direct air from an outlet of the negative pressure source to the environment. A non-return valve may inhibit back flow of air into the wound dressing.

First claim

What is claimed is:

1. A wound dressing apparatus comprising:
a wound contact layer configured to be positioned in contact with a wound;
a first area over the wound contact layer comprising:
a lower spacer layer;
an absorbent layer;

a second area over the wound contact layer comprising a plurality of spacer layers and a negative pressure source and/or electronic components positioned within or between the plurality of spacer layers, wherein the first area is positioned adjacent to the second area and separated by a partition;
an upper spacer layer configured to cover the first area and the second area and to allow air to be communicated between the first area and second area around the partition; and
a cover layer configured to cover and form a seal over the wound contact layer, the upper spacer layer, the first area, and the second area.

2. The wound dressing apparatus of claim 1 , wherein the plurality of spacer layers in the second area comprise a third spacer layer beneath the negative pressure source and/or electronic components and a fourth spacer layer positioned above the negative pressure source and/or electronic components, wherein the fourth spacer layer comprises one or more cutouts or recesses configured to receive the negative pressure source and/or electronic components.

3. The wound dressing apparatus of claim 1 , wherein the partition comprises a non-porous dam.

4. The wound dressing apparatus of claim 1 , further comprising one or more user interface components configured to allow a user to operate the negative pressure source and/or electronic components.

Assignees

• Smith & Nephew

Inventors

• Askem Ben Alan
• Beadle Victoria
• Gowans John Philip
• Hesketh Mark
• Hunt Allan Kenneth Frazer Grugeon
• Kelbie William
• Musgrave Damyn
• Robinson Joseph William

Classifications

• A61F13/022

  having more than one layer with different fluid retention characteristics · CPC title

• A61F13/0206

  with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings · CPC title

• A61M2039/2433

  Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc · CPC title

• A61M39/24

  Check- or non-return valves · CPC title

• A61M1/74

  Suction control (underwater drainage A61M1/61) · CPC title