Negative pressure wound therapy device

• US 10,111,991 B2
• Filed: 09/28/2016
• Issued: 10/30/2018
• Est. Priority Date: 04/17/2009
• Status: Active Grant

• Current Assignee: Smith+Nephew, Inc.
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Inventors: Buan, John, Carson, Alan, Gelfman, Daniel
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US15/278,811
• Publication Number:
  US 20170014276A1
• Time in Patent Office: 762 Days
• CPC Class Codes: A61F 13/0206 with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
• CPC Class Codes: A61F 13/0253 characterized by the adhesive material
• CPC Class Codes: A61F 13/0259 characterised by the release liner covering the skin adhering layer
• CPC Class Codes: A61F 13/05 specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
• CPC Class Codes: A61F 13/064 for feet incorporating non-textile reinforcing elements, e.g. springs or stays A61F5/0111; corn-pads, corn-rings A61F13/063
• CPC Class Codes: A61F 13/51456 characterised by its properties
• CPC Class Codes: A61F 17/00 First-aid kits
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds
• CPC Class Codes: A61M 1/917 specially adapted for covering whole body parts
• CPC Class Codes: A61M 1/985 the dressing itself forming the collection container
• CPC Class Codes: A61M 2210/086 Legs

Abstract

A wound therapy device and a kit for same with a housing material, a gasket disposed around at least a portion of the housing material, a non-woven absorption material, and a port. The gasket is sized and configured such that at least a first portion of the gasket will be adhered to a second portion of the gasket upon a folding of the housing material. A method of using a wound therapy device.

Claims

1. A negative pressure wound therapy system, comprising:

a non-woven material configured to be positioned on an appendage, the non-woven material configured to communicate negative pressure to a wound on an appendage;

a gas impermeable flexible housing material configured to be positioned over the non-woven material, the flexible housing material comprising a fold, the fold generally perpendicular to a longitudinal axis of the appendage, and

wherein the flexible housing material comprises a gasket comprising a first portion and a second portion, the gasket configured such that when the flexible housing material is folded back upon itself to surround the wound on the appendage, the first portion of the gasket is adhered to the second portion of the gasket.

2. The negative pressure wound therapy system of claim 1, wherein the gasket is configured to form a seal around the circumference of the appendage, the seal configured to prevent the passage of gas.

3. The negative pressure wound therapy system of claim 1, wherein the flexible housing material further comprises a coating of adhesive on a skin-facing side of the flexible housing material.

4. The negative pressure wound therapy system of claim 1, wherein the gasket comprises a hydrogel.

5. The negative pressure wound therapy system of claim 1, wherein the flexible housing material comprises a liner.

6. The negative pressure wound therapy system of claim 1, wherein the gas impermeable housing material comprises an opening, the opening configured to allow the passage of negative pressure.

7. The negative pressure wound therapy system of claim 6, further comprising a port positioned over the opening.

8. The negative pressure wound therapy system of claim 7, further comprising a source of negative pressure connected to the port.

9. The negative pressure wound therapy system of claim 8, wherein the opening is located over the non-woven material.

10. The negative pressure wound system of claim 7, wherein the port is configured to be positioned over a top of the appendage.