In a therapeutic device (1) for the treatment of human respiratory illnesses, consisting ofa mouthpiece (2) in which a passage duct (3) is worked,a hose (5) attached to the mouthpiece (2) arranged flush with the opening (6) of the passage duct (3) and whichis formed from a flexible elastic material, the free end (7) of which facing away from the passage duct (3) is open and ofa support body (11) connected to the mouthpiece (2) with a curved or bent cross-sectional structure,low and medium frequencies and pressures should be able to be set both during exhalation and inhalation.This is achieved in that an adjusting device (12) is provided at a distance from the mouthpiece (2) in the support body (11), in which case the adjusting device (12) can be moved in relation to the support body (11), that the adjusting device (12) is connected to the hose (5) either directly or via intermediate elements (13) and that, due to the changing position of the adjusting device (12), the distance from the hose (5) to the support body (11) can be variably adjusted so that the curvature of the hose (5) can be set independently from the radius of curvature of the support body (11).
