The modern electric principle of the fan drive is used, with the help of which, in contrast to the outdated “fur in a bottle” system, precise control of ventilation parameters is ensured and additional air consumption is not required for the control and operation of the system. When connected to the Profilungs anesthesia module, the Venar Libera device allows you to ventilate the patient in a multilevel ventilation mode, which is especially important during long-term difficult operations (for example, cardiac), when the patient is connected to a heart-lung machine