Wound care article for extraction and control of wound fluids

• US 9,907,708 B2
• Filed: 03/18/2014
• Issued: 03/06/2018
• Est. Priority Date: 10/02/2006
• Status: Active Grant

• Current Assignee: BSN Medical GmbH (Essity AB)
• Original Assignee: BSN Medical Germany Holding GmbH (Essity AB)
• Inventors: Riesinger, Birgit
• Primary Examiner(s): Su, Susan
• Application Number:
  US14/218,237
• Publication Number:
  US 20140296813A1
• Time in Patent Office: 1,449 Days
• 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 13/01017 synthetic, e.g. polymer based
• CPC Class Codes: A61F 13/01038 Flexibility, stretchability or elasticity
• CPC Class Codes: A61F 13/01042 Absorbency
• CPC Class Codes: A61F 13/01046 Air-vapor permeability
• CPC Class Codes: A61F 13/069 Decubitus ulcer bandages
• CPC Class Codes: A61F 13/08 Elastic stockings; for contracting aneurisms
• CPC Class Codes: A61F 13/45 characterised by the shape cup-shaped type tampons A61F13/2045
• CPC Class Codes: A61F 13/538 characterised by specific fibre orientation or weave
• CPC Class Codes: A61F 15/00 Auxiliary appliances for wound dressings; Dispensing containers for dressings or bandages packaging of absorbent articles such as diapers, feminine hygiene absorbing pads or tampons A61F13/551; packaging of wound dressings A61F13/00072
• CPC Class Codes: A61F 2013/00136 anisotropy
• CPC Class Codes: A61F 2013/00153 coloured or with decoration pattern or printing
• 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 2013/00229 with alginate
• CPC Class Codes: A61F 2013/00246 in a special way pervious to air or vapours
• CPC Class Codes: A61F 2013/00519 for treating burn bandages for burns or skin transplants A61F2013/00157
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61F 2013/00617 with different hardness
• CPC Class Codes: A61F 2013/00731 : with absorbing pads
• CPC Class Codes: A61F 2013/0074 : containing foams
• CPC Class Codes: A61F 2013/00748 : with hydrocolloids or superabsorbers wound bandages with alginate A61F2013/00229; plasters with cyano-acrylic adhesive A61F2013/00459; plasters for treating burn with hydrogel A61F2013/00523; adhesive for plasters, with hydrogel A61F2013/00676; water-based A61F2013/00689; for use on mucosae A61F2013/00714; for use on wounds A61F2013/00719; with absorbent adhesives A61F2013/00757; with fumed silica A61F2013/00787; with viscoelastic oil-elastomer gel A61F2013/00893
• CPC Class Codes: A61F 2013/00855 : pervious to air or vapours wound bandages in a special way pervious to air or vapour A61F2013/00246
• CPC Class Codes: A61F 2013/00914 : with deodorising or perfuming means
• CPC Class Codes: A61F 2013/00927 : with biological activity, e.g. enzymes for debriding wounds or others, collagen or growth factors
• CPC Class Codes: A61F 2013/00936 : metal wound bandages with a metallic layer A61F2013/00234
• CPC Class Codes: A61F 2013/4518 : formed from two separated panels
• CPC Class Codes: A61F 2013/530802 : characterized by the foam or sponge other than superabsorbent A61F2013/530649 takes precedence

Abstract

The subject of the invention is a wound care article for extraction and control of wound fluids, comprising at least one first fluid-absorbing structure (1; 10; 36), which is surrounded by a liquid-permeable, first enclosure (2), and a liquid-permeable, second enclosure (3) comprising two enclosing surfaces (13.1, 13.2). The wound care article is thus characterized in that the first enclosure (2) is covered or supported on at least one of its flat sides (4.1, 4.2) by at least one fluid-absorbing material layer (6.1, 6.2; 6.3), which is arranged (FIG. 1a) between the first enclosure (2) and one of the enclosing surfaces (13.1, 13.2) of the second enclosure (3).

Claims

1. A wound care article capable of extracting and controlling wound fluids, comprising:

at least one first fluid-absorbing structure, which is surrounded by a liquid-permeable, first enclosure, and a liquid-permeable second enclosure, comprising two enclosing surfaces,

wherein, the first enclosure is covered or supported on at least one of its flat sides by at least one fluid-absorbing material layer, which is arranged between the first enclosure and one of the enclosing surfaces of the second enclosure,

wherein the first fluid-absorbing structure is a mechanically solidified fleece-like pad,

wherein the fluid-absorbing material layer is an absorbent foam material pad, and wherein the first fluid-absorbing structure and/or the fluid-absorbing material layer comprise superabsorbent material.

2. The wound care article according to claim 1, wherein the first enclosure is surrounded by the second enclosure.

3. The wound care article according to claim 1, characterized in that the fleece-like pad is supported by a pad containing alginate, arranged within the first enclosure, whereby the pad containing alginate is arranged on said fleece-like pad on the side that is turned away from the material layer.

4. The wound care article according to claim 1, further comprising an alginate layer that is covered over the material layer, whereby said alginate layer lies between the material layer and one of the enclosing surface of the second enclosure.

5. The wound care article according to claim 1, wherein the material layer is peripherally attached to the first enclosure.

6. The wound care article according to claim 1, wherein the first and/or the second enclosure comprises one rough interior surface and one smooth exterior surface.

7. The wound care article according to claim 6, wherein the rough interior surface of the first and/or of the second enclosure further comprises funnel-shaped perforations introduced into the enclosing material.

8. The wound care article according to claim 6, wherein the smooth exterior surface of the first and/or of the second enclosure comprises arched material section, extending between the perforations.

9. The wound care article according to claim 1, wherein a central opening is processed on the fluid-absorbing material layer, in which an insert containing alginate is placed.

10. The wound care article according to claim 9, wherein the insert is released for direct contact with the respective wound through a window located on one of the enclosing surfaces of the second enclosure.

11. The wound care article according to claim 1, wherein at least one of the enclosing surfaces of the second enclosure is covered by a covering sheet.

12. The wound care article according to claim 1, wherein the material layer is spirally shaped in a top view of its flat side.

13. The wound care article according to claim 1, wherein the material layer in a top view of its flat side comprises multiple, concentrically applied, round or rectangular frames.

14. The wound care article according to claim 1, wherein at least one cut is introduced on said one of the enclosing surfaces of the second enclosure, and the material layer that is spirally shaped or comprises multiple concentric frames at least partly extends out of said one of the enclosing surfaces when applied on the wound.

15. The wound care article according to claim 1, wherein the fleece-like pad contains alginate.

16. The wound care article according to claim 1, wherein the fleece-like pad contains cellulose.

17. The wound care article according to claim 1, wherein the fleece-like pad contains carboxymethyl cellulose.

18. The wound care article according to claim 17, wherein the carboxymethyl cellulose is present in the form of sodium carboxymethyl cellulose.

19. The wound care article according to claim 1, wherein the fleece-like pad is of an Airlaid type.

20. The wound care article according to claim 1, wherein the fleece-like pad is in the form of casting, a pressing, and/or in form of shavings.

21. The wound care article according to claim 1, wherein within the fleece-like pad the super-absorbent particles are arranged in the matrix containing cellulose fibres.

22. The wound care article according to claim 1, wherein the super-absorbent particles are present in powder or granulate form in a particle size between from 100 μ

m to about 1000 μ

m.

23. The wound care article according to claim 1, wherein the foam material pad is made of polyurethane foam.

24. The wound care article according to claim 1, wherein the foam material pad is made of cross-linked foams.

25. The wound care article according to claim 1, wherein the foam material is an open-pored foam material.

26. The wound care article according to claim 1, wherein the foam material pad is an closed-pore foam material with continuous openings and/or holes in the foam material.

27. The wound care article according to claim 1, wherein the at least one first fluid-absorbing structure comprises a greater absorptive capacity and a higher extractive ability than the at least one fluid-absorbing material layer.

28. The wound care article according to claim 1, wherein the foam material is an open-celled hydrophilic foam structure.