Negative pressure wound therapy device

• US 9,579,431 B2
• Filed: 02/13/2014
• Issued: 02/28/2017
• Est. Priority Date: 04/17/2009
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Kalypto Medical, Inc. (Smith & Nephew PLC)
• Inventors: Buan, John, Carson, Alan, Gelfman, Daniel
• Primary Examiner(s): Kidwell, Michele
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US14/179,893
• Publication Number:
  US 20140163494A1
• Time in Patent Office: 1,111 Days
• US Class Current: 1/1
• 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 method of treating a wound on an appendage with negative pressure wound therapy, comprising:

positioning a layer of adhesive gasket around a circumference of an appendage, the adhesive gasket comprising a plurality of pieces;

placing a non-woven material over the wound on the appendage, the non-woven material configured to communicate negative pressure to the wound;

positioning a flexible housing material over the appendage, wherein the flexible housing material is configured to allow negative pressure to be provided to the wound underneath the flexible housing material;

folding the flexible housing material to form a fold such that the housing becomes sealed to the appendage, wherein the fold is generally perpendicular to a longitudinal axis of the appendage;

forming a hole in the flexible housing material; and

applying negative pressure to the hole in the flexible housing material.

2. The method of claim 1, wherein the flexible housing material further comprises an adhesive coating.

3. The method of claim 1, further comprising attaching a port to the flexible housing material, the port positioned over the hole.

4. The method of claim 1, wherein the gasket comprises a hydrogel.

5. A method of treating a wound on a foot with negative pressure wound therapy, comprising:

applying a negative pressure wound therapy device to the foot, wherein the negative pressure wound therapy device comprises a non-woven material placed into contact with the wound and a flexible housing material folded over the foot so that a first portion of the flexible housing material is folded back onto a second portion of the housing material, wherein the first portion of the flexible housing material forms a seal with an upper surface of the foot using hydrogel gasket material applied to an upper surface of the foot, and the second portion of the flexible housing material forms a seal with a lower surface of the foot using hydrogel gasket material applied to a lower surface of the foot; and

applying negative pressure to the wound on the foot through a hole formed in the flexible housing material.

6. The method of claim 5, further comprising attaching a port to the hole formed in the flexible housing material.

7. The method of claim 5, wherein the hole is adjacent to the non-woven material.