Cough assist device for performing insufflation and exsufflation of gas to/from a patient, comprising: - a motorized turbine in fluidic communication with a gas circuit (4, 5, 6) comprising an insufflation line and an exsufflation line, - a display screen, - control means comprising a microprocessor and configured to control the turbine and a display on the display screen, and in which the control means are additionally configured to control a display, on the display screen, of a video animation implementing a first graphical representation symbolizing at least the gas insufflation and exsufflation phases and a second graphical representation symbolizing the patient, - and storage means configured to store the animated video, characterized in that: - the dimensions of the first and second graphical representations displayed on the display screen vary inversely to one another and in correlation with the phases of insufflation and exsufflation of gas by the turbine, - the turbine comprises an electric motor, the insufflation line being fluidically connected to a gas outlet of the turbine and the exsufflation line being fluidically connected to a gas inlet of the turbine, and - the control means are configured to control the turbine so as to cyclically trigger an insufflation phase and an exsufflation phase, such that:. during each insufflation phase, the turbine generates a positive pressure (P+) of between 5 and 70 mbar and. during each exsufflation phase, the turbine generates a negative pressure (P-) of between 0 and -70 mbar. - a motorized turbine in fluidic communication with a gas circuit (4, 5, 6) comprising an insufflation line and an exsufflation line, - a display screen, - control means comprising a microprocessor and configured to control the turbine and a display on the display screen, and in which the control means are additionally configured to control a display, on the display screen, of a video animation implementing a first graphical representation symbolizing at least the gas insufflation and exsufflation phases and a second graphical representation symbolizing the patient, - and storage means configured to store the animated video, characterized in that: - the dimensions of the first and second graphical representations displayed on the display screen vary inversely to one another and in correlation with the phases of insufflation and exsufflation of gas by the turbine, - the turbine comprises an electric motor, the insufflation line being fluidically connected to a gas outlet of the turbine and the exsufflation line being fluidically connected to a gas inlet of the turbine, and - the control means are configured to control the turbine so as to cyclically trigger an insufflation phase and an exsufflation phase, such that:. during each insufflation phase, the turbine generates a positive pressure (P+) of between 5 and 70 mbar and. during each exsufflation phase, the turbine generates a negative pressure (P-) of between 0 and -70 mbar.. during each insufflation phase, the turbine generates a positive pressure (P+) of between 5 and 70 mbar and. during each exsufflation phase, the turbine generates a negative pressure (P-) of between 0 and -70 mbar.