The invention relates to a device for suction of liquids and/or particles from body orifices, wherein the device comprises a suction channel (16) through which the liquid and/or particles can be aspirated and a vacuum pump (14) for generating an underpressure in the suction channel (16). The suction channel (16) is provided with an opening for supplying additional air for adjusting the underpressure, wherein the volume flow of this additional air is adjustable via an additional air adjustment unit (24). Further, the device (10) has a manually operable adjustment unit (26) for adjusting the additional air adjustment unit (24), wherein the adjustment of the adjustment unit (26) in each case by a same preset adjustment way effects in each case the same change in the underpressure.
