Negative Pressure Wound Therapy Device

• US 20100268198A1
• Filed: 04/16/2010
• Published: 10/21/2010
• 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: Carlson, Alan, Gelfman, Daniel, Buan, John
• Granted Patent: US 8,663,198 B2
• Time in Patent Office: Days
• US Class Current: 604/543
• CPC Class Codes: A61F 13/00068 specially adapted for application or removal of fluid, e.g. irrigation or drainage of wounds, under-pressure wound-therapy A61F13/0216 takes precedence; drainage appliances for wounds in general A61M27/00
• 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 13/0216 the fluid handling member being non absorbent, e.g. for use with sub- or over-pressure therapy, wound drainage or wound irrigation systems
• 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 with negative pressure wound therapy comprising the steps of:

disposing a non-woven absorption material above a 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 disposed through the housing material;

positioning the housing material around an appendage of the patient having the wound;

folding the housing material;

positioning the port adjacent the non-woven absorption material;

sealing the housing material to the appendage such that a first portion of the gasket is adhered to a second portion of the gasket; and

,

applying negative pressure to the wound.

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 portion of the housing material is folded 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. A kit for a negative pressure wound therapy device comprising:

a housing material having a first side and a second side;

a gasket having a first portion and a second portion and being disposed on the first side of the housing material;

an adhesive disposed on the first side of the housing material;

a port disposed through the housing material;

a liner disposed on the adhesive; and

a non-woven absorption material;

wherein upon removal of the liner, the non-woven absorption material can be secured to the housing by the adhesive and disposed on a wound and where upon folding the housing material, the first portion of the gasket is adhered to the second portion of the gasket.

14. The kit of claim 13 further comprising:

a wound interface layer to be disposed between the non-woven absorption material and the wound.

15. The kit of claim 14 wherein the wound interface layer surrounds the non-woven absorption material.

16. The kit of claim 13 further comprising:

a second liner disposed on first side of the housing material.

17. The kit of claim 13 further comprising:

a stiffener disposed on second side of the housing material.

18. The kit of claim 13 wherein the port is configured to prevent exudates from flowing through the port.

19. The kit of claim 13 further comprising:

tubing; and

,

a pump.

20. A negative pressure wound therapy device, the device comprising:

a housing material having a first side and a second side;

a gasket disposed on the first side of the housing material and having a configuration such that upon a folding of the housing material around a wound, a first portion of the gasket will be adhered to a second portion of the gasket;

an adhesive disposed on the first side of the housing material;

a port disposed through the housing material;

a liner disposed on the adhesive;

a non-woven absorption material; and

,

a wound interface layer surrounding the non-woven absorption material.

21. The device of claim 20 wherein the port is configured to prevent exudates from flowing through the port.