Inhalation apparatus

Details Inhalation apparatus Inhalation apparatus

A - Human Necessities

61

M

A61M 16/00 (2006.01)

Patent

CA 2142666

The apparatus comprises a housing (1) which is provided with a mouthpiece (2) for the patient, one or more air inlet openings (5, 16) and an inhalation channel (2, 7, 3) connecting the latter to the mouthpiece. A supply chamber (10) for a pulverulentinhalation preparation and a dosing mechanism (8, 8a) are provided in the housing (1), by means of which a defined dose of inhalation preparation can be removed from the supply chamber (10) and introduced into the inhalation channel (2, 7, 3). The dosing mechanism comprises a dosing element (8) which can be displaced to and fro between an inoperative position and an operating position and which is provided with a dosing slot (8a) which in the inoperative position of the dosing element is situated inside the supply chamber (10) or in the region of an emptying aperture (10b) of the same and which receives there a defined dose of inhalation preparation corresponding to its volume from the supply chamber (10) and which in the operating position of the dosing element (8) is situated in the inhalation channel (2, 7, 3) and the inhalation preparation contained in it is discharged into the inhalation stream produced by the patient and flowing through the inhalation channel (2, 7, 3). The dosing element (8) is coupled to a piston (11), which is acted upon by parts at least of the inhalation stream and can be displaced by the latter, and is moved by the inhalation stream produced by the patient via this piston from its inoperative position into its operating position.

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