胸腔引流主要适用于:(1)开胸术后使肺部重新膨张;(2)帮助排出胸膜腔内的积液、积血、脓液和空气。胸膜腔有两层胸膜,即外膜和内膜,外膜也叫壁层胸膜与胸腔内壁相粘连;内膜即脏层胸膜与肺表面相粘连。胸膜腔内呈负压,将壁层胸膜吸附于腔壁 Thoracic drainage is mainly applied to: (1) re-expansion of the lung after thoracotomy; (2) to help discharge pleural cavity effusion, blood, pus and air. Pleural cavity has two layers of the pleura, that is, the outer membrane and endometrium, the outer membrane is also called the parietal pleura and the inner wall of the chest wall adhesions; endometrial visceral adhesions of the visceral pleura and the lung surface. Pleural cavity was negative pressure, the parietal pleura adsorption in the cavity wall