The CPTpatch is a disposable, sterile, active wound dressing. CPTpatches are exclusively used in combination with the energy supply unit CPTcube. The CPTpatch has an atraumatic, self-adhesive border for an easy attachment to the area of application. During treatment, a physical plasma in the form of a purple glowing discharge is generated between the wound and the patient side of the CPTpatch.

The plasma converts the air within the defined volume between the CPTpatch and the wound surface into a physicallly active state. This is associated with the generation of alternating electric fields, light in the UV and infrared range, the formation of ions, and a slight increase in temperature. These components have an impact both on the whole skin-surface covered and in small pores, as well as skin depressions. The combination of these physical mechanisms results in an antimicrobial/antifungal effect of the physical plasma and stimulation of wound healing.