Compressible wound fillers and systems and methods of use in treating wounds with negative pressure

Patent metadata

Field	Value
Publication number	US-11097044-B2
Application number	US-201816221313-A
Country	US
Kind code	B2
Filing date	Dec 14, 2018
Priority date	Mar 14, 2013
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Apparatuses and methods disclosed herein relate to various embodiments of wound fillers that, in some cases, preferentially collapse in one direction as compared to another direction. Such apparatuses and methods may aid in the closure of wounds and may further be used in combination with pressure sensors and controllers to provide for controlled collapse of the wound fillers.

First claim

What is claimed is:

1. A wound treatment apparatus for use with negative pressure, comprising:
a wound filler for use in treating a wound with negative pressure, comprising:
a layer comprising a plurality of enclosed dome-shaped bubbles spread across a surface of the layer; and
wherein the bubbles are configured to collapse under negative pressure.

2. The wound treatment apparatus of claim 1 , wherein the plurality of enclosed dome-shaped bubbles are variable-sized bubbles.

3. The wound treatment apparatus of claim 1 , wherein the plurality of enclosed dome-shaped bubbles are configured to collapse in one direction.

4. The wound treatment apparatus of claim 1 , wherein the plurality of enclosed dome-shaped bubbles are configured to collapse in a horizontal direction while remaining rigid in a vertical direction.

5. The wound treatment apparatus of claim 1 , wherein the layer comprising a plurality of enclosed dome-shaped bubbles spread across a surface of the layer is a first layer, and wherein the wound filler further comprises a second layer comprising a plurality of bubbles spread across a surface of the second layer.

6. The wound treatment apparatus of claim 5 , wherein the first layer and the second layer are layered one on top of the other.

7. The wound treatment apparatus of claim 5 , wherein the first layer and the second layer are layered one on top of the other such that the plurality of enclosed dome-shaped bubbles on the first layer face the plurality of bubbles on the second layer.

8. The wound treatment apparatus of claim 1 , wherein the layer comprises a plurality of openings.

9. A wound treatment apparatus for use with negative pressure, comprising:
a wound filler for use in treating a wound with negative pressure, comprising:
a layer comprising an array of enclosed bubbles spread across a surface of the layer, wherein the bubbles are spaced apart from each other by gaps both along a length and a width of the layer; and
wherein the array of enclosed bubbles are configured to collapse under negative pressure.

Assignees

• Smith & Nephew

Inventors

• Hartwell Edward Yerbury
• Hicks John Kenneth
• Saxby Carl
• Huddleston Elizabeth Mary
• Hoggarth John Christian
• Stern Tim
• Linton Andrew

Classifications

• A61M1/966

  having a pressure sensor on or near the dressing · CPC title

• A61M1/916 Primary

  specially adapted for deep wounds · CPC title

• A61M1/915

  Constructional details of the pressure distribution manifold · CPC title

• A61M2210/1021

  Abdominal cavity · CPC title

• A61M1/90 Primary

  Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing · CPC title