Abstract: The device is for suppressing snoring and apnoea during sleep. It is placed in the oro-pharynx and at the buccal cavity region during sleep. It comprises a flexible tube (1) arciform and transversally flattened, of adapted anatomical design, for being placed between the tongue (13) and the soft palate (15), down to at least the base of the tongue (14). A filter (2) is fixed to the external end of this tube. The filter can be removable. Thus, the air breathed in (10) moves freely from outside up to the larynx, without snoring or apnoea. A fixing system (24) is provided so that the tube is maintained well inside the mouth during sleep.