经导管主动脉瓣置换器械研制及动物实验方法Instruments development and experiment study for transcatheter aortic valve replacemet
陈翔,马丽萍,张志钢,白元,王倩,薛旺,姜海滨,李铭辉,谭洪文,黄新苗,赵仙先,秦永文
摘要(Abstract):
目的探讨经导管置入新型带瓣膜球囊扩张支架,置换动物主动脉瓣的可行性和有效性。方法自行设计圆柱状网状支架,使用医用316L不锈钢激光雕刻而成。将新鲜的猪心包经脱细胞等处理后裁剪成人工瓣膜,缝合在不锈钢支架上,制成带瓣膜主动脉支架。手术前将带瓣膜支架压缩至定制的相应大小球囊的预载输送鞘管上。选择健康羊3只,开腹分离腹主动脉,穿刺腹主动脉,建立轨道,X线引导下沿加硬导丝经22F输送鞘管将带瓣膜支架逆行送至主动脉瓣位置,扩张球囊释放支架,置换原主动脉瓣。于手术后即刻观察实验效果。结果 1只实验羊因支架置入位置过低突入左心室造成动物心室颤动后死亡,另2只实验羊经导管瓣膜置换术均获得成功,术后即时影像及解剖结果表明人工主动脉瓣膜置入位置理想,可代替原瓣膜工作。结论经导管置入自制新型带瓣膜球囊扩张支架置换动物主动脉瓣方法可行,效果理想。
关键词(KeyWords): 心脏瓣膜假体植入;气囊扩张术;动物,实验
基金项目(Foundation): 国家高科技研究发展计划(“863”计划,2006AAOZZ41D7)
作者(Author): 陈翔,马丽萍,张志钢,白元,王倩,薛旺,姜海滨,李铭辉,谭洪文,黄新苗,赵仙先,秦永文
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