Primary dressing

• US 8,603,053 B2
• Filed: 04/11/2007
• Issued: 12/10/2013
• Est. Priority Date: 04/12/2006
• Status: Active Grant

• Current Assignee: BSN Medical GmbH (Essity AB)
• Original Assignee: Birgit Riesinger
• Inventors: Riesinger, Birgit
• Primary Examiner(s): Anderson, Lynne
• Application Number:
  US12/226,109
• Publication Number:
  US 20090093779A1
• Time in Patent Office: 2,435 Days
• Field of Search: 604/290, 604/304, 604307-308, 604/383, 602/47
• US Class Current: 604/304
• CPC Class Codes: A61F 13/00051 Accessories for dressings
• CPC Class Codes: A61F 13/00059 provided with visual effects, e.g. printed or colored
• CPC Class Codes: A61F 13/01029 made of multiple layers
• CPC Class Codes: A61F 13/01034 characterised by a property
• CPC Class Codes: A61F 13/022 having more than one layer with different fluid retention characteristics
• CPC Class Codes: A61F 13/0243 characterised by the properties of the skin contacting layer, e.g. air-vapor permeability
• 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 13/069 Decubitus ulcer bandages
• 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 2013/00217 not adhering to the wound with wax A61F2013/00161
• CPC Class Codes: A61F 2013/00327 to create projections or depressions in surface
• 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 2013/00557 detachable absorbent pad
• CPC Class Codes: A61F 2013/00604 Multilayer
• CPC Class Codes: A61F 2013/00825 protection of wound surround protecting the body against ulcers A61F2013/15024; protection in contaminated, e.g. NBC or industrial toxic ambience A61F2013/15065; prophylaxis A61F2013/15081; protection of the body or articulation A61F2013/00272; safety barrier for protection of the operator A61F2013/00297; skin protection A61F2013/00387; for protection of suture stitches A61F2013/00455

Abstract

The invention relates to a liquid-permeable primary dressing in the form of a supple thermoplastic section of material (1.4), comprising: a first smooth surface (4); a second surface (5) facing away from the smooth surface (4); and a plurality of three-dimensional perforations, whose walls extend from the first smooth surface (4) and end in an overhang with a free edge, thus making the second surface (5) rough to the touch. At least one of the free edges has an angled section that is approximately perpendicular to a perforation axis. In a preferred embodiment, the periphery (13) of the material section is smooth on both sides, i.e. on both the first and second surfaces (4; 5), the periphery (13) of the surface (5) that was at first rough being thermally smoothed.

Claims

1. A liquid-permeable primary dressing (100) in the form of a flexible thermoplastic material section (1.1;

1.2;

1.3;

1.4;

1.5), comprising;

a first surface (4) of the material section (1.1;

1.2;

1.3;

1.4;

1.5),

a second surface (5) of the material section (1.1;

1.2;

1.3;

1.4;

1.5) facing away from the first surface (4),

a plurality of three-dimensional perforations (2;

2″

;

21) whose walls (3), starting from the first surface (4), run out into an edge projection with a free edge (8) and impart a rough grip to the second surface (5),

characterized in that at least one of the free edges (8) merges into a section (12) bent approximately vertically to a perforation axis (A), the first surface is smooth, and each free edge is substantially equidistant from the first surface.

2. The primary dressing according to claim 1, characterized in that the walls (3) of the perforations (2) are designed substantially conically.

3. The primary dressing according to claim 1, characterized in that the perforations (2) are small enough for a through meniscus formation of liquids with a specific weight between 0.9 and 1.2.

4. The primary dressing according to claim 1, characterized in that the perforations (2) are round or oval.

5. The primary dressing according to claim 1, characterized in that the perforations (2) are present in the form of oblong holes.

6. The primary dressing according to claim 1, characterized in that the perforations (2) are pyramid-shaped and that their walls (3) are segmented, i.e., separated from each other with stamped lines (16).

7. The primary dressing according to claim 4, characterized in that the round perforations (2) have a diameter of 650 to 800 μ

m.

8. The primary dressing according to claim 5, characterized in that the oblong holes are 900 to 1200 μ

m long with a width of approximately 700 μ

m.

9. The primary dressing according to claim 1, characterized in that the material section is smooth on its periphery (13) on its two sides, that is, on the first surface as well as on the second surface (4;

5) and that the second surface (5) that was first raw is thermally smoothed on the periphery (13).

10. The primary dressing according to claim 1, characterized in that markings (17;

18) are applied on the material section (1.4).

11. The primary dressing according to claim 1, characterized in that the material section (1.5) is provided with at least one turned-back fold (15).

12. The primary dressing according to claim 1, characterized in that the material section is connected to an encased absorption body (20).

13. The primary dressing according to claim 1, characterized in that the material section is formed to an envelope (26) into which an absorption body can be placed.

14. The primary dressing according to claim 1, characterized in that the material section is a carrier for pharmaceutical agents.

15. The use of the primary dressing according to claim 1 for covering wounds as a sterilized primary dressing (100) onto which absorbent secondary dressings (40) can be placed.

16. The use of the primary dressing according to claim 1 for one of the group consisting of compression therapy for chronic wounds and vacuum therapy.

17. A liquid-permeable wound care dressing having a flexible thermoplastic material section comprising:

a first surface of the material section;

a second surface of the material section facing away from the first surface; and

a plurality of three-dimensional perforations passing into the first surface and having walls, that starting from the first surface, extend toward the second surface and into an edge projection with a free edge, and at least one free edge having a section that is bent substantially perpendicularly relative to a wall of the perforation, the bent section being capable of deflection relative to the respective free edge, wherein the edge projection and free edge impart a rough grip to the second surface, and wherein each free edge is substantially equidistant from the first surface.

18. A liquid-permeable wound care dressing having a flexible thermoplastic material section comprising:

a first surface of the material section;

a second surface of the material section facing away from the first surface; and

a plurality of three-dimensional perforations passing into the first surface and having walls, that starting from the first surface, extend toward the second surface and into an edge projection with a free edge, and at least one free edge having a section that is bent substantially perpendicularly relative to a wall of the perforation, the bent section being capable of deflection relative to the respective free edge, wherein the edge projection and free edge impart a rough grip to the second surface, and wherein each free edge is substantially equidistant from the first surface;

wherein the plurality of three-dimensional perforations each further comprise a first opening in the first surface and a second opening at the end of the walls extending toward the second surface.