Apparatus and method for wound cleansing with actives

Patent metadata

Field	Value
Publication number	US-11298453-B2
Application number	US-201816142411-A
Country	US
Kind code	B2
Filing date	Sep 26, 2018
Priority date	Oct 28, 2003
Publication date	Apr 12, 2022
Grant date	Apr 12, 2022

Abstract

An apparatus and method for cleansing and applying therapy or prophylaxis to wounds, in which irrigant fluid, which may contain a physiologically active material, and wound exudate from the dressing are moved by a device for moving fluid through a flow path which passes through the dressing. A means for fluid cleansing may also be provided to recirculate fluid back to the dressing. The cleansing means removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The apparatus may also provide means for distributing such materials in a precise and time-controlled manner over the wound bed. It may also contain a means for providing simultaneous aspiration and irrigation of the wound.

First claim

What is claimed is:

1. An apparatus for aspirating, irrigating and/or cleansing wounds, comprising:
a conformable wound dressing having a backing layer configured to form a relatively fluid-tight seal or closure over a wound;
a physiologically active agent source configured to connect by a fluid supply tube to the wound dressing, wherein the fluid supply tube is configured to deliver a physiologically active agent comprising oxygen from the physiologically active agent source to the wound;
a negative pressure source configured to apply negative pressure to an interior of the wound dressing and to the wound; and
wherein the physiologically active agent is configured to be supplied to the wound dressing from the physiologically active agent source via the fluid supply tube while fluid is simultaneously aspirated by the negative pressure source and desired negative pressure is applied to the wound.

2. The apparatus of claim 1 , further comprising a wound contact layer.

3. The apparatus of claim 1 , wherein the wound contact layer comprises a biodegradable material.

4. The apparatus of claim 3 , wherein the biodegradable material comprises a cellulose derivative.

5. The apparatus of claim 1 , wherein the physiologically active agent source comprises a reservoir.

6. The apparatus of claim 1 , further comprising a controller.

7. The apparatus of claim 6 , wherein the controller is configured to control delivery of negative pressure.

8. The apparatus of claim 6 , wherein the controller is configured to control delivery of the physiologically active agent.

9. The apparatus of claim 7 , wherein negative pressure is delivered continuously.

10. The apparatus of claim 7 , wherein negative pressure is delivered intermittently.

11. The apparatus of claim 6 , wherein the controller is configured to switch between a first setting where a physiologically active agent is delivered to the wound and a second setting where negative pressure is delivered to the wound.

12. The apparatus of claim 8 , wherein the physiologically active agent is delivered in a plurality of supply cycles.

13. The apparatus of claim 6 , wherein the controller is configured to control delivery of negative pressure and delivery of the physiologically active agent.

Assignees

• Smith & Nephew

Inventors

• Blott Patrick Lewis
• Green Clare
• Greener Bryan
• Hartwell Edward Yerbury
• Lee-Webb Julian
• Martin Robin Paul
• Nicolini Derek
• Walker Tina Michelle

Classifications

• A61M1/94

  with gas supply means · CPC title

• A61M1/916

  specially adapted for deep wounds · CPC title

• A61M1/85 Primary

  with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants (for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208) · CPC title

• A61M1/90

  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

• A61M35/30 Primary

  Gas therapy for therapeutic treatment of the skin · CPC title