Device (1) for inhaling powdery substances (46), especially of medical nature, contained in capsules (31) can be brought into an emptying position by means of a housing (A) translatable in a flat housing (2), in the the device (1) has a ratio of width to height of 1: 2 and has a depth, considered perpendicularly to the extension of the height, which corresponds approximately to half the measure of the extent of the width of the flat housing (2), wherein also in the emptying position can puncture a capsule wall by means of movable needles (34) in order to aspirate and emptying the contents of the capsule through a nozzle channel (5 ) extending in axial extension of a capsule chamber (28), and wherein the housing (a) is configured as part of a narrow side wall (17) of the flat housing (2) tiltable limitedly out around an axis (y), charac terized by a partial area of a plane (E) of narrow side wall is configured as a button (36) elastically supported to a needle holder (35) in which the needles (34), so are subject to the subarea retract to at most the plane (E) of the narrow side wall (17), and that the narrow side wall (17) pivots out together with an almost middle housing part (2 ) of box-shaped, including a bottom portion (18) having a bolt pivot (19), and that the button (36) is guided in a limited way by abutment in the housing part (2 ) pivotable out, fulfilling also a portion of stationary housing (2 ) defines substantially a half section of box-shaped housing.Dispositivo (1) para inhalar sustancias pulverulentas (46), especialmente de naturaleza médica, contenidas en cápsulas (31) que pueden ponerse en una posición de vaciado por medio de un alojamiento (A) trasladable en una carcasa plana (2), en el que el dispositivo (1) presenta una relación de anchura-altura de 1:2 y tiene una profundidad, considerada perpendicularmente a la extensión de la altura, que corresponde aproximadamente a la mitad de la medida de la extensión de la anchura de la carcasa plana (
