| 摘要 |
A dry powder inhaler device (1) having an air inlet system (21, 22, 23) and a mouthpiece (11) is disclosed. The inhaler (1) includes a first inner airflow channel (50) connecting the mouthpiece (11) and the inlet system (21, 22, 23) and having a dose entrainment region (19). A desiccant material (45) is provided in connection with the first channel (50) downstream of the inlet system (21, 22, 23) but upstream of the dose entrainment region (19). The inhaler (1) also includes a second inner airflow channel (60) connected between the mouthpiece (11) and the inlet system (21, 22, 23) but bypasses the desiccant material (45). A switch arrangement (30, 31, 32) is provided for switching between the first channel (50) and the second channel (60) during an applied suction action to induce an airflow from the from the inlet system (21, 22, 23) through a selected airflow channel and to the mouthpiece (11). |
