Tracheal stent的用法和样例：
例句
- Objective It is to study the clinical effect of treating tracheostenosis by tracheal stent placement through fiberoptic bronchoscope.
目的研究经纤支镜放置气管支架治疗气管狭窄的临床效果。 - Conclusions Tracheal stents can relieve symptoms and improve the life quality in patients with tracheal stenosis caused by malignant tumors or tracheal malacia.
结论气管支架对良恶性肿瘤引起的气管受压性狭窄，气管软化引起的气管狭窄，有良好的缓解症状，改善生活质量的作用。
