SACRAL WOUND DRESSING AND METHOD OF MANUFACTURING A WOUND THERAPY DEVICE

• US 20120197229A1
• Filed: 08/03/2011
• Published: 08/02/2012
• Est. Priority Date: 08/04/2010
• Status: Abandoned Application

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC)
• Original Assignee: Kalypto Medical, Inc. (Smith & Nephew PLC)
• Inventors: Buan, John, Carlson, Alan, Buseman, Jason
• Application Number:
  US13/197,518
• Publication Number:
  US 20120197229A1
• Time in Patent Office: Days
• US Class Current: 604/385.05
• CPC Class Codes: A61F 13/00063 comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic drug delivery dressings A61K9/70; chemical aspect of the additives A61L15/00
• CPC Class Codes: A61F 13/022 having more than one layer with different fluid retention characteristics
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• CPC Class Codes: A61F 13/0276 Apparatus or processes for manufacturing adhesive dressings or bandages
• CPC Class Codes: A61F 13/0289 manufacturing of adhesive dressings
• 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 13/148 Abdomen bandages or bandaging garments
• CPC Class Codes: A61F 2013/00157 for burns or skin transplants A61F2013/00187 takes precedence; not adhering to the wound A61F2013/00217
• CPC Class Codes: A61F 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00234 metallic layer
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/00574 shaped as a body part A61F2013/00187 take precedence; use of plasters A61F2013/00365; containing means for different purposes A61F2013/00902
• CPC Class Codes: A61F 2013/00582 Properties of backing
• CPC Class Codes: A61F 2013/00604 Multilayer
• CPC Class Codes: A61F 2013/00825 protection of wound surround
• CPC Class Codes: A61F 2013/0091 with disinfecting or anaesthetics means, e.g. anti-mycrobic
• CPC Class Codes: A61F 2013/1513 for anal discharge
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/985 the dressing itself forming the collection container
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: Y10T 29/49826 : Assembling or joining
• CPC Class Codes: Y10T 29/4998 : Combined manufacture including applying or shaping of fluent material

Abstract

A sacral wound therapy device which includes a backing material having an outer surface that is wipeable. A method of manufacturing a wound therapy device wherein a portion of a release liner remains on the backing material throughout at least a portion of the manufacturing process.

Claims

1. A sacral wound therapy device comprising:

a backing material having an outer surface and an inner surface, the outer surface being a wipeable material and the inner surface having an adhesive;

a port hole disposed in the backing material; and

,

an absorptive pad disposed on the inner surface of the backing material such that a portion of the absorptive pad is disposed under the port hole, the absorptive pad comprised of a material that passively draws exudates from a wound and retains the exudates while the device is subjected to negative pressure.

2. The device of claim 1 wherein the backing material is comprised of a first layer and a second layer.

3. The device of claim 2 wherein the first layer and second layer are held together by an adhesive.

4. The device of claim 1 further comprising a gasket disposed on the inner side of the backing material between the absorptive pad and an edge of the backing material.

5. The device of claim 4 further comprising the absorptive pad having a shape and the gasket having a shape, and wherein the shape of the absorptive pad is substantially the same as the shape of the gasket.

6. The device of claim 5 further comprising the shape of the absorptive pad being a heart shape.

7. The device of claim 4 further comprising the gasket being a hydrogel and having a width of approximately ¾

of an inch.

8. The device of claim 7 further comprising the gasket having a thickness of approximately 40 mils.

9. The device of claim 4 further comprising the gasket being disposed immediately adjacent the absorptive pad.

10. The device of claim 3 further comprising a wound interface layer disposed over at least a portion of the absorptive pad.

11. The device of claim 10 wherein the wound interface layer is a silver plated mesh.

12. The device of claim 1 wherein the backing material is semi-permeable.

13. The device of claim 1 wherein the port hole further comprises an adaptor with a fluid impermeable membrane.

14. The device of claim 2 wherein the first layer is a perforated EVA medical tape and the second layer is a polyurethane medical tape.

15. The device of claim 4 wherein the backing material has a skirt and a two piece release liner is disposed on the skirt.

16. A method of manufacturing a negative pressure wound therapy device comprising the steps of:

providing a backing material with a shape having a perimeter and a release liner removably secured on a first side of the backing material by an adhesive;

removing a first portion of the release liner such that a second portion of the release liner remains on the perimeter of the backing material;

inserting an adaptor into the backing material;

placing an absorptive pad onto the backing material such that a portion of the absorptive pad is disposed on top of the adaptor;

placing a wound interface layer over the absorptive pad; and

,

disposing a gasket on the backing material between the perimeter of the backing material and the wound interface layer.

17. The method of claim 16 wherein the step of disposing a gasket comprises the steps of:

pouring a gasket material; and

,

curing the gasket material.

18. The method of claim 16 further comprising the steps of:

applying a second release liner to the backing material after the step of curing the gasket material; and

,

cutting the negative pressure wound therapy device into a desired shape.

19. The method of claim 18 further comprising the steps of:

sealing the negative pressure wound therapy device in a pouch after the step of cutting the negative pressure wound therapy device.

20. The method of claim 18 wherein the second release liner is a two piece release liner.