It is common clinical practice to change wound dressings in a certain time interval of 24 to 48 hours to control possible infections of the wound. This induces stress to the micro environment of the wound. Therefore, effort is made to monitor wound healing by non invasive sensor designs. A multi-parametric sensor integrated in the wound dressing was suggested, that detects an infection and, consequently, avoids stress factors given by frequent and unnecessary changes of bandages.