Conclusion Through insert memory ahoy stent by endoscope,esophageal striture was treated, the key was that elastic recoil force and different preparation value were evaluated correctly.

• 结论内镜下置入记忆合金支架治疗食管狭窄技术的关键，在于正确认识记忆合金支架的弹性回缩力，计算出预留值。