Wound dressing for detecting an infection in wound exudate

The wound dressing (40) of any one of the preceding claims, characterized in that the diffusion barrier (30) completely surrounds the at least one test area (20).

The wound dressing (40) of any one of the preceding claims, characterized in that the diffusion barrier (30) extends at least 10 %, preferably at least 50 %, and particularly preferably substantially completely into the carrier material (10) from the first surface (11) to the second surface (12) in a vertical direction.

The wound dressing (40) of any one of the preceding claims, characterized in that the thickness (d) of the wall of the diffusion barrier (30) measured at the first surface (11) is between 0.1 mm and 5.0 mm, preferably between 0.5 mm and 3.0 mm and more preferably between 0.6 mm and 2.0 mm.

The wound dressing (40) of any one of the preceding claims, characterized in that the carrier material (10) comprises or consists of an absorbent material, a paper, a hydrogel, a non-woven textile, a woven textile or a foam, in particular a gauze.

The wound dressing (40) of any one of the preceding claims, characterized in that the support layer (1) is configured as a wound pad.

The wound dressing (40) of any one of the preceding claims, characterized in that the distance from the first surface (11) to the second surface (12) of the carrier material (10) is between 0.5 mm and 10.0 mm, preferably between 1.0 mm and 8.0 mm and more preferably between 1.5 mm and 5.0 mm.

The wound dressing (40) of any one of the preceding claims, characterized in that the carrier material (10) comprises at least 2, preferably 2 to 50, more preferably 2 to 10 test areas (20).

The wound dressing (40) of any one of the preceding claims, characterized in that between 5 % and 90 %, preferably between 10 % and 85 % and more preferably between 20 % and 80 % of the first surface (11) is covered by the at least one test area (20).

A method of manufacturing a support layer (1) for a wound dressing (40), wherein the support layer (1) is adapted for enzymatic detection of an infection in wound exudate, the method comprising the steps of:

• providing a carrier material (10) capable of conducting liquids having a first surface (11) and a second surface (12) opposite the first surface (11), applying a barrier composition comprising a hydrophobic substance on the first surface (11), which is capable of forming a diffusion barrier (30) in the carrier material (10), so that a test area (20) confined by said diffusion barrier (30) is formed,
• curing and/or drying the barrier composition,
• applying a test substance (21, 22) to the test area (20) on the first surface (11), such that the test substance (21, 22) is retained within the test area (20) by the diffusion barrier (30).