Connect the vest patients wearing to host, and then aerate and deflate quickly,

making patients’chest wall occur regular diastolic movement。

The patients’lung and airway produces independent tremor airflow and orientation drainage force

which make respiratory tractsmucus and metabolite in pulmonary lobe slack , liquefied and drop,

furthermore, discharge the liquefied or deciduous metabolite based on selected direction
(such as bronchiole, bronchus and trachea),  this way called as Chest wall concussion technology