| 摘要 |
A device for inhaling a powdery, micronized and formulated, pharmacologically active drug in the form of an aerosol, comprising: a drug supply container (3) having a lower end; a manually actuatable movable metering plate at least partially closing off the lower end of the supply container and repeatedly receptive of a drug in the supply container for delivering a predetermined reproducible quantity thereof and comprising at least one depression for receiving the drug; a mouthpiece (14) for inhaling the drug by a user; a dispersing chamber (12) upstream of the mouthpiece; a circular cross-section discharge chamber upstream of the dispersing chamber and to which the dispersing chamber is tangentially adjoined wherein a wall of the dispersing chamber merges into a circular wall of the discharge chamber forming a tangent thereto in cross-section, wherein the dispersing chamber, the discharge chamber, and their tangent connection all lie in a first plane; a cylindrical dwell time chamber (9) upstream of the discharge chamber and having a central outlet having a smaller diameter than that of the dwell time chamber for connecting the dwell time chamber to the discharge chamber; and an elongated acceleration channel (10) partially covering the metering plate and opening tangentially into the dwell time chamber wherein a wall of the acceleration channel merges into a cylindrical wall of the dwell time chamber forming a tangent thereto in cross-section, wherein the acceleration channel, the dwell time chamber, and their tangent connection all lie in a second plane, the central outlet connecting the first and second planes. |
