A data medium of the compact disc type may include medium areas of different types configured to define digital content, and a controllable element having two different states corresponding respectively to the two different types of areas. A pressure application lever presses the second fixing member toward the first fixing member. When the system is operating, the probe is aligned with the image sensing device such that the captured image of the probe is displayed on the center of the cross. The air flow enters the flow channel via the air intake, passes through the air inlet and the air outlet in succession and leaves the flow channel via the air vent. A device according to the invention is characterised by ease of use, in particular for inexperienced surgeons, and the opportunity for rapid implementation of an arthroscopic procedure by means of a minimally invasive intervention in the body.