Abstract: A system for treating and/or preventing a viral, bacterial and/or fungal infection in the oral cavity and/or along the respiratory tract, in particular the interior of the nose, throat, trachea and/or lungs, of a patient by reactive species generated by plasma as well as a plasma for such use is disclosed. The system comprises a plasma source generating reactive species in a gas, the plasma source being configured to be located outside a body of the patient, and a species directing member forming at least one duct for guiding at least a part of the reactive species generated by the plasma source into the oral cavity and/or the respiratory tract.

Abstract: The invention relates to a plasma device (1) for treating body surfaces, comprising a main body (3) that can be held in the hand, on which a plasma source (5) is arranged, which is designed for generating a non-thermal plasma, and comprising a spacer which is designed to define, when installed, a distance between the plasma source (5) and a body surface to be treated, wherein the spacer (7) can be detachably connected to the main body (3) and/or to the plasma source (5), and wherein the plasma source (5) can be detachably connected to the main body (3).