| 摘要 |
<p>A pulmonary therapy device i.e. positive expiratory pressure (PEP), especially for children, is shaped like a dolphin having a mouthpiece inlet 2 at one end and a tail fin 3 at the opposite end. A gas path 15 from the inlet 2 extends to an outlet 16 closed by a beam 20 mounted midway along its length about a horizontal axis. The beam 20 is held down by a magnet arrangement 23 until exhaled pressure is sufficient to lift it and open the outlet 16. The tail fin 3 is attached to the opposite end of the beam from the inlet 2 and extends externally of the housing 10. The fin 3 flaps up and down as the patient experiences vibrating resistance to exhalation to give a visual feedback.</p> |
