Treatment device and a treatment system

A treatment system for treating a part of a corpus of a living being, the treatment system comprising:

• a treatment device for temporarily or permanently placing a therapeutic device in a part of a corpus of a living being, the treatment device comprising an elongated body for being inserted in the part of the corpus, the elongated body comprising:
• a channel for guiding the therapeutic device to a specific position within the channel, and/or for holding the therapeutic device at the specific position within the channel;
• and an impedance sensor element configured to be coupled to a detection device for detecting a presence of the therapeutic device at the specific position based on a change of a signal provided by the impedance sensor element;
• a detection device connectable to the impedance sensor element of the treatment device for detecting a change of the signal provided by the impedance sensor element in response to the presence of the therapeutic device at the specific position;
• and
• a tracking device connectable to the impedance sensor element of the treatment device for tracking a relative position of the impedance sensor element with respect to a field generator, which is arranged at a fixed position with respect to the corpus, wherein the field generator generates an electromagnetic field, which is detectable by the impedance sensor element.