The Multimode-Anaesthesia-Ventilator MAV4 uses a strong design that makes it easier for this ventilator to function. It uses several respiratory modes and a colour touch screen for controls. It can monitor many types of gas and will use a simple design that makes it easier to manage. This is useful and can be upgraded or converted as needed. This works with PCV, SIMV, CMV, MMV, MAN/SPONT and ASB ventilation setups and can also be used on patients who are being treated for apnea. This is useful with additional curves to use and can also be adjusted with every respiratory form in mind. It is useful for all respiratory modes and can analyse leakage functions. It is a unit that is compliant with a number of different materials for use.