Multi-Component Dressing for Wound Treatment on the Human or Animal Body with Application of Reduced Pressure

• US 20080004559A1
• Filed: 11/02/2005
• Published: 01/03/2008
• Est. Priority Date: 11/02/2004
• Status: Active Grant

• Current Assignee: BSN Medical GmbH (Essity AB)
• Original Assignee: Birgit Riesinger
• Inventors: Riesinger, Birgit
• Granted Patent: US 7,775,998 B2
• Time in Patent Office: Days
• US Class Current: 602/46
• 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 13/01012 being made of natural material, e.g. cellulose-, protein-, collagen-based
• CPC Class Codes: A61F 13/0209 comprising superabsorbent material
• CPC Class Codes: A61F 13/025 having a special distribution arrangement of the adhesive
• 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 2013/00153 coloured or with decoration pattern or printing
• CPC Class Codes: A61F 2013/00174 possibility of applying pressure
• CPC Class Codes: A61F 2013/00182 with transparent part
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61F 2013/0054 for deep wounds
• CPC Class Codes: A61F 2013/00561 with adhesive connecting means plasters with a double adhesive layer A61F2013/00421; with cyano-acrylic adhesive A61F2013/00459; adhesives for plasters A61F2013/00655; with absorbent adhesives A61F2013/00757; with permeable adhesive layers A61F2013/00761; different adhesion of different adhesive layers A61F2013/00804; changing the adhesion force with strain value A61F2013/00838
• CPC Class Codes: A61F 2013/00714 adhesives for mucosae
• CPC Class Codes: A61F 2013/00846 with transparent or translucent part
• CPC Class Codes: A61F 2013/00936 metal wound bandages with a metallic layer A61F2013/00234
• CPC Class Codes: A61M 1/66 Pre-evacuated rigid containers, e.g. Redon bottles
• CPC Class Codes: A61M 1/67 Containers incorporating a piston-type member to create suction, e.g. syringes cupping glasses A61M1/08; with a flexible member creating suction A61M1/68
• CPC Class Codes: A61M 1/964 having venting means on or near the dressing
• CPC Class Codes: A61M 1/985 the dressing itself forming the collection container

Abstract

The invention relates to a multi-component dressing (100) for treating wounds of the human or animal body using a reduced pressure, having a wound-covering element (4) for mounting the dressing (100) at the surface of the skin and the mucous membrane and at least one connecting site (5), which is in contact with the wound space (10) and over which the materials in the wound space (10) can be evacuated. The multi-component dressing has super-absorbing polymers, the absorbed wound secretions remaining bound to polymers in the wound space until the latter are removed from the wound space and the polymers, due to their binding capacity, supporting reciprocal synergies with the sub-atmospheric pressures. Wound exudate, promoted by the reduced pressure, is also stored and controlled by polymerized granulates.

Claims

1. A multi-component wound dressing for treating wounds of the human or animal body using a reduced pressure, having a wound covering element to be applied to the surface of the skin and the mucous membrane,

at least one connecting site, which is in contact with the wound space and over which the materials in the wound space can be evacuated,

the improvement wherein

the wound space has super-absorbing polymers,

the absorbed wound secretions, bound to polymers, remain in the wound space until the polymers are removed and

the polymers, due to their bonding capacity, support reciprocal synergies with the sub-atmospheric pressures.

2. The multi-component dressing of claim 1, wherein the polymers preferably are selected from the group of sodium polyacrylates.

3. The multi-component dressing of claim 1, wherein this dressing has at least one enveloped absorption body with at least one layer of a textile section, which is interspersed with supra-absorbing particles.

4. The multi-component dressing of claim 1, wherein the absorption body is enclosed in a liquid-permeable envelope, which has pores, the size of which essentially does not exceed that of the supra-absorbing particles.

5. The multi-component dressing of claim 4, wherein the absorption body, which is to be placed in the wound space, has an initial volume (V1), which becomes enlarged in the course of the absorption process, and assumes a final volume (V2) with which the wound space and, with that, the respective wound defects, can be filled during the swelling process.

6. The multi-component dressing of claim 3, wherein the layer, in plan view of its flat side, has a two-dimensionally extent, which is 3% to 90% smaller than that of the envelope when placed flat.

7. The multi-component dressing of claim 1, wherein the material of the absorption body contains active substances, such as nanocrystalline silver particles, which have an effect on the wound healing process.

8. The multi-component dressing of claim 1, wherein the absorption body is glued over its whole surface to a wound covering element, a periphery being left free at the wound covering element.