| 摘要 |
An ultrasonic inhaler has a breathing mask with ultrasonic head 4 driven by transducer 3 to evaporate pharmaceutical liquid delivered to the head from collapsible container and via conduit 2. The container 1 is forcibly collapsed by a pressure plate 8 fixed to the end of a plunger 13 which is received in hollow shaft 11. Rotation of the shaft by motor 6 through gears 7 causes the threaded plunger to rise by coaction with a thread formed in housing part 16 connected to a pivotable cover 18 arranged to close the cot container chamber 5 and to be locked by lock 19. Conduit 2 may be enclosed along part of its length with a heated block which serves to heat the inhalant before being atomised. <IMAGE> |
