In a jet endoscope (1) for respiration and interventions in surgical applications, including connections for gas lines to which different respiratory gases with different pulsation frequencies can be connected, at least four connections are provided for at least two channels (11,12) arranged in a relatively offset manner in the axial direction of the jet endoscope (1) while opening at acute angles with respect to the axis (8) for the injection of gases with different pulsation frequencies, and at least two further channels (13,14) provided distally to the respiratory channels (11,12) for a separate gas analysis and a separate pressure measurement, respectively.
