| 摘要 |
An apparatus for dislodging or loosening mucus in a person's lungs, for example of a sufferer of cystic fibrosis, comprises a bath arranged to receive the person and filled with water such that the person's chest is immersed in the water. A vibrator vibrates the liquid so that the vibrations are transmitted to the person's lungs. In use the vibrations are preferably at the pulmonary resonant frequency or Helmholtz resonant frequency of the person's lungs.
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