Light, flexible, automatic sputum discharge, simplify clinical nurse. Easy operation. Easy to learn, it does not affect other testing equipment operation Pure physical work principle, independent air orientation drainage effect. Improve clinical use range and cure effect. Healing power is stable and durable, reduce antibiotics amount and Shortening treatment time. Be equipped with all kinds of vests, satisfying any body postures. Strong penetration, can penetrate cortex , muscle, tissue and body fluid, Discharge rapidly sputum from lung lobe deep part.