IP Library › Granted Patent US 7,982,087
Granted Patent B2
US 7,982,087 · App. 12/351,541 · Granted Jul 19, 2011

Wound dressing

Assignee: Smith & Nephew, Inc.
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Quick Facts
Patent No.
US 7,982,087
App. No.
12/351,541
Granted
Jul 19, 2011
Kind
B2
Abstract

A wound dressing includes a substantially transparent upper layer, an absorbent layer comprising a plurality of apertures arranged in a lattice pattern, and a low-adherent wound contact layer provided with a plurality of apertures arranged in a lattice pattern such the apertures of this layer are congruent with the apertures of the absorbent layer.

Claims (17)

1. A wound dressing comprising:

a substantially transparent layer;

a low-adherent wound contact layer; and

an absorbent layer between the transparent layer and the wound contact layer, the absorbent layer defining a plurality of apertures arranged in a lattice pattern, the wound contact layer defining a plurality of apertures arranged in a lattice pattern such that the apertures of the wound contact layer are congruent with the apertures of the absorbent layer.

2. The wound dressing of claim 1 wherein the substantially transparent layer comprises a film.

3. The wound dressing of claim 1 wherein the film comprises an adhesive coating.

4. The wound dressing of claim 1 wherein the absorbent layer comprises foam.

5. The wound dressing of claim 1 wherein the absorbent layer comprises struts defining a plurality of apertures arranged in the lattice pattern.

6. The wound dressing of claim 5 wherein the apertures are irregular hexagons.

7. The wound dressing of claim 1 wherein the absorbent layer has an absorbent area of not more than 50% of the total area covered.

8. The wound dressing of claim 1 wherein the absorbent layer lattice pattern repeats every 5 to 50 mm.

9. The wound dressing of claim 1 wherein the wound contact layer comprises a film.

10. The wound dressing of claim 1 wherein the wound contact layer comprises struts defining a plurality of apertures arranged in the lattice pattern.

11. The wound dressing of claim 1 wherein peripheral edges of the transparent layer extend beyond peripheral edges of the absorbent layer.

12. A method comprising:

hole punching an absorbent layer and a wound contact layer of a wound dressing such that the absorbent layer defines a plurality of apertures arranged in a lattice pattern and the wound contact layer defines a plurality of apertures arranged in a lattice pattern, and

arranging the absorbent layer between a transparent layer and the wound contact layer, the apertures of the wound contact layer being congruent with the apertures of the absorbent layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2009
From: GREENER, BRYAN; FREEDLINE, ALLAN
To: SMITH & NEPHEW, INC.
Reel/Frame 022641/0518 →
Continuity (1)
Related Publication 20100179463A1 · Jul 15, 2010