近年来,采用一种新型的内支架以治疗食管癌性梗阻。此种扩张性金属网管,先束缚于小口径的引导装置内,使之呈压缩状态,然后插入食管。在支架抵达狭窄处后,除去束缚装置,支架便在狭窄部位扩张。因金属支架管径小,故便于插入;又因其能扩张至较大口径,故可迅速 In recent years, a new type of stent has been used to treat esophageal cancer obstruction. This expandable metal mesh tube is first confined to a small-diameter guide device so that it is in a compressed state and then inserted into the esophagus. After the stent reaches the narrow site, the restraint device is removed and the stent is expanded at the stenosis site. Due to the small diameter of the metal stent, it is easy to insert; because it can expand to a larger diameter, it can be quickly