The present invention relates to a intelligent ventilator system comprising a basic ventilator unit (10) with a housing comprising a main controller unit (12), a first display (14), a first controller unit (16) and a pneumatic system (18) for mechanically moving a gas into and out of the lungs of a patient.According to the invention a S-Viewer (20) is connected to the basic ventilator (10) and comprises a second display (22) and a second controller unit (24).