Negative pressure wound therapy device

• US 8,663,198 B2
• Filed: 04/16/2010
• Issued: 03/04/2014
• Est. Priority Date: 04/17/2009
• Status: Active Grant

• Current Assignee: Smith+Nephew, Inc.
• Original Assignee: Kalypto Medical, Inc. (Smith & Nephew PLC)
• Inventors: Buan, John, Carlson, Alan, Gelfman, Daniel
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US12/762,149
• Publication Number:
  US 20100268198A1
• Time in Patent Office: 1,418 Days
• Field of Search: 604540-544
• US Class Current: 604/543
• 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 the steps of:

disposing a non-woven absorption material over the wound;

removing at least a portion of a liner from a housing material having a first side with an adhesive, a gasket disposed on the first side and a port in communication with the housing material;

positioning the housing material around the appendage;

folding the housing material to seal the housing material to the appendage such that a first portion of the gasket is adhered to a second portion of the gasket around at least a portion of a periphery of the appendage, wherein the non-woven absorption material is positioned within the seal formed by the gasket and the port is positioned adjacent the non-woven absorption material; and

,

applying negative pressure to the wound through the port on the housing to apply negative pressure to the wound through the non-woven absorption material.

2. The method of claim 1 further comprising the step of:

disposing a wound interface layer in between the non-woven absorption material and the wound.

3. The method of claim 2 wherein the step of disposing the wound interface layer in between the non-woven absorption material and the wound includes the step of surrounding the non-woven absorption material with the wound interface layer.

4. The method of claim 1 further comprising the step of:

removing a second liner from the housing material.

5. The method of claim 1 further comprising the step of:

removing a stiffener from the housing material.

6. The method of claim 1 wherein the step of folding the housing material includes the step of folding a first portion of the housing material onto a second portion of the housing material.

7. The method of claim 1 wherein the step of folding the housing material includes folding the housing material in a direction that is perpendicular to a longitudinal axis of the appendage.

8. The method of claim 1 wherein the step of folding the housing material includes folding the housing material in a direction that is parallel to a longitudinal axis of the appendage.

9. The method of claim 1 wherein the step of removing at least a portion of a liner from a housing material includes removing all of the liner.

10. The method of claim 1 further comprising the step of collecting and retaining exudates within the non-woven absorption material.

11. The method of claim 1 further comprising the step of preventing exudates from flowing through the port.

12. The method of claim 1 wherein the step of sealing the housing material to the appendage includes a third portion of the gasket being adhered to a fourth portion of the gasket.

13. The method of claim 1, wherein folding and sealing the housing material comprises folding the gasket such that a first area of the first portion of the gasket, when folded and sealed, is approximately equal to a second area of the second portion of the gasket.

14. The method of claim 1, wherein removing at least a portion of a liner need not occur after disposing a non-woven absorption material over the wound.

15. The method of claim 1, wherein the port passes through the housing.