The invention relates to a treatment system (1) for cleaning a component contaminated by biofilm, more particularly for cleaning bacterially contaminated surfaces of bone implants or dental implants (30), the treatment system comprising at least two conductor elements (2, 4) connected to an electrical supply unit (10) to form an electrical circuit. One of the conductor elements can be brought into electrical contact with the component in need of treatment. The object of the invention is to provide a treatment system of this type which allows a particularly acceptable and flexible treatment. To this end, according to the invention at least one of the conductor elements (2, 4) is designed as a diamond electrode (26).