The authors place double tract sac thoracic duction instrument through authors cannulation to treat cases open pneumothorax, recovered 0 cases, 7 %;
应用经套管针置入双腔气囊式胸腔引流装置治疗开放性气胸 例，治愈0例，占7．％；
2
The digitalization of metal mines can help to fully exploit the resource, efficiently carry out the mine p duction, reduce the workers'labor strength and raise both the economical and social benefits.