[1]李宗明,刘 耿,张全会,等.可降解镁合金气管支架在兔气管狭窄模型中初步应用 [J].介入放射学杂志,2018,27(04):353-356.
LI Zongming,LIU Geng,ZHANG Quanhui,et al.The application of biodegradable magnesium alloy tracheal stent in treating tracheostenosis: preliminary study in rabbit tracheal stenosis model[J].journal interventional radiology,2018,27(04):353-356.
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可降解镁合金气管支架在兔气管狭窄模型中初步应用
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《介入放射学杂志》[ISSN:1008-794X/CN:31-1796/R]
- 卷:
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27
- 期数:
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2018年04期
- 页码:
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353-356
- 栏目:
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实验研究
- 出版日期:
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2018-04-25
文章信息/Info
- Title:
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The application of biodegradable magnesium alloy tracheal stent in treating tracheostenosis: preliminary study in rabbit tracheal stenosis model
- 作者:
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李宗明; 刘 耿; 张全会; 关绍康; 王利国; 韩新巍; 路慧彬; 任克伟
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- Author(s):
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LI Zongming; LIU Geng; ZHANG Quanhui; GUAN Shaokang; WANG Liguo; HAN Xinwei; LU Huibin; REN Kewei
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Department of Interventional Radiology, First Affiliated Hospital of Zhengzhou University, Interventional Therapy Institute of Zhengzhou University, Henan Provincial Interventional Therapy and Clinical Research Center, Zhengzhou, Henan Province 450052, China
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- 关键词:
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【关键词】 生物降解; 镁合金气管支架; 动物模型
- 文献标志码:
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A
- 摘要:
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【摘要】 目的 探讨可降解镁合金气管支架制备及其在气管狭窄动物模型中应用的安全性及可行性。方法 采用气管软骨环间横行切开气管,并用毛刷环形破坏气管黏膜方法制备兔气管狭窄模型30例。镁锌钇钕(Mg- Zn- Y- Nd)合金经热挤压和冷拉拔工艺制备出直径0.24 mm和0.28 mm两种丝材,通过单根丝一体化整体编织技术将两种合金丝编织成8 mm×20 mm气管裸支架各15枚,并检测其物理性能。透视下将两种支架分别植入气管狭窄模型兔气管内,并于术后3、7、15、30、60 d各处死两种支架3只兔,评价支架金属丝断裂、支架压缩、支架降解及气管黏膜肉芽组织增生情况。结果 两种镁合金支架支撑力均略大于镍钛(Ni- Ti)合金支架,丝材直径0.28 mm支架支撑力大于直径0.24 mm支架;丝材直径0.24 mm、0.28 mm支架平均扩张率分别为76.46%、84.66%;镁合金支架完全自膨性能略低于Ni- Ti合金支架。术后3 d支架结构完整,无坍塌;术后7 d支架结构基本完整,有部分丝材断裂,未见组织增生;术后15 d支架基本坍塌,大部分丝材断裂,未见组织增生;术后30 d支架完全降解,气管内壁光滑,未见组织增生;术后60 d气管内壁光滑,未见组织增生。结论 镁合金支架径向支撑力稍强于Ni- Ti合金支架,金属丝易断裂,但生物相容性良好,可降低肉芽组织增生。
参考文献/References:
[1] 申 楠, 季洪健, 冯建聪. 气道内支架在良性气道狭窄中的应用进展[J]. 介入放射学杂志, 2016, 25: 367- 370.
[2] 邵国良, 肖湘生. 内支架在良性气道狭窄中的应用现状与进展[J]. 介入放射学杂志, 2008, 17: 605- 607.
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[4] Han Y, Fan Z, Lu Z, et al. In vitro degradation of poly[(L- lactide)- co-(trimethylene carbonate)] copolymers and a composite with poly[(L- lactide)- co- glycolide] fibers as cardiovascular stent material[J]. Macromol Mater Eng, 2012, 297: 128- 135.
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备注/Memo
- 备注/Memo:
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(收稿日期:2017-05-16)
(本文编辑:边 佶)
更新日期/Last Update:
2018-04-16