Patent ID: 7077832

Claim:
A device for application of active substrates to a wound surface, said device comprising: a padding of porous material adapted for application upon a wound surface, a sealing cover for covering the wound surface and the padding and adapted to be sealingly applied to the skin surface, at least one supply line introduced into the padding for supplying a fluid active substance, and at least one removal line introduced into the padding for removing said active substance, the removal line connectable to a vacuum source, wherein the supply line is provided with a controllable closure mechanism, the removal line is provided with a controllable closure mechanism and a controller is provided which temporally controls these closure mechanism so that the closure mechanism of the supply line and the closure mechanism of the removal line are not open at the same time and that in the time between the closure of the closure mechanism of the supply line and the opening of the closure mechanism of the removal line a treatment dwell time interval is provided.