the inhaler shown in the figures comprises a main body , a movable part and a top part . the main body is formed from a lower member 1 ( with respect to the drawings ), an intermediate profiled tubular jacket 2 securely fixed onto a tubular jacket 3 projecting from the lower member 1 , and a transverse wall 4 rigid with the upper end of an appendix 5 , along the periphery of which there are provided two or more holes 6 ( which are rectilinear and parallel to the longitudinal axis of the jackets 2 and 3 ); two or more holes 7 are provided in the transverse wall 4 as can be seen from the drawings , but these holes are not strictly necessary . on the upper free end of the jacket 2 there is fixed ( for example by snap - fitting , screwing , or by a bayonet coupling system or the like ) the top part 8 , which is internally hollow and has its upwardly facing portion gradually decreasing with respect to that portion thereof which faces the jacket 2 . into the part 8 there extends a transverse wall 9 traversed by a plurality of small holes 10 . in the space defined by the cylindrical jacket 3 there is housed a substantially cylindrical body 11 which comprises the said holes 6 and from which a radial collar 12 projects . from the lower part ( with respect to the drawings ) of the body 11 there project two elongate appendices 13 which extend ( and are axially translatable ) through the apertures ( not identified by numbers in the drawings ) provided in the lower member 1 . when in its rest state ( fig2 ), the collar 12 rests on the upper surface of the member 1 , urged by a spring 14 . from the upper part of the body 11 there upwardly project the pointed ends of two needles or rods 15 which can translate through corresponding holes 16 ( fig2 ) provided in the discoidal part 4 ( fig1 ). when in the rest state ( fig2 ) the points of the needles are covered by the wall 4 , whereas these needle points project above this wall ( fig1 ) and extend into a chamber 17 defined by the tubular jacket 2 and the top part 8 ( when the movable part is pressed against the body 1 - 4 by overcoming the action of the spring 14 ), until they perforate the bottom of a capsule 18 housed in said chamber ; when the thrust action exerted by a finger on the free end of the appendices 13 ceases and the spring 14 lowers the movable part until the collar 12 rests on the part 1 of the main body . under these conditions the capsule 18 which now presents holes 19 at its lower end ( fig2 ) remains free to oscillate and to rotate within the inhaler chamber . as can be seen from both figures , in the lower part of the chamber 17 there are provided a plurality of apertures 20 which open to the outside of the peripheral lateral surface of the tubular jacket 2 , these apertures being all distributed about the periphery of the jacket 2 and being all inclined to the central axis of the chamber 17 in order to cause the capsule ( by the effect of the inhalation ) to rotate about its axis and at the same time to oscillate about the point at which the capsule rests on the wall 9 . in addition , at the sides of the apertures 20 there project from the jacket 2 some inclined fins 21 , the purpose of which is to prevent the fingers of the user which grip the inhaler from closing the apertures 20 . the structure of the aforedescribed inhaler is not explained in greater detail because it is substantially similar to that illustrated in u . s . pat . no . 4 , 995 , 385 and ep - b - 60388621 . the main novelty of the inhaler of the invention is the presence of the holes 6 and 7 ( the latter not indispensable ) which , when the air is drawn in by the user through the inhaler mouthpiece ( i . e . from the free end of the top part 8 ), enable the chamber 17 to receive at high velocity not only the air which passes through the apertures 20 ( to cause lifting , rotation and shaking of the capsule 18 ), but in particular that air which passes through the holes 6 and possibly 7 ( provided between the main body and the movable part , or in only one of these ) and the holes 16 ( provided in the transverse wall 4 ) , the flow of this air being directed substantially from the bottom ( with respect to the figures ) upwards and acting such that the product in powder form is unable to deposit on the lower wall of the chamber 17 and partially block the holes 6 . in this manner the entire powder product leaving the capsule 18 is entrained upwards by the air stream drawn in and is inhaled by the user of the device . it should be noted that the inhaler mouthpiece can be protected by a removable cover 22 or the like and that the free ends of the needles 15 can remain inserted into the holes 16 of the wall 4 ( hence maintaining them closed ) when the inhaler is in its rest state . one embodiment of the inhaler has been described with reference to the drawings , however numerous constructional variations can be made thereto . for example , the needles can consist of a single u - bent metal element , the loop or curved part of which is inserted into and retained by pressure in a seat provided in the upper end of the movable part . the transverse wall 4 can be replaced by a dome - shaped element with small holes for passage of air and of the opposing ends of the needles , it being inserted and retained by simple friction between the main body and the movable part . the holes for passage of air into the chamber below the capsule can be totally provided in the movable part , which would hence assume the form of a piston housed in and translatable within the cylindrical bore of the main body .
a device defining a chamber for housing a capsule containing a product in fine powder form , comprising a manually movable part provided with needles which perforate the capsule when the movable part is operated and leave the capsule when the movable part is released , the entire product in powder form escaping from the capsule , to be inhaled .