目的:本试验研究在同一个机构,新旧3代封堵装置应用于继发孔型房间隔缺损的结果。背景:随着封堵装置的不断改进,经导管房间隔缺损封堵器的运用越来越多。方法:对使用Clamshell(C.R.Bard Inc.,Murray Hill,NewJersey),CardioSE-AL(NMT Medical Inc.,Boston,Massachusetts)和STAR OBJECTIVE: This study investigated the results of applying a new generation of occlusion device of the third generation in the same institution to atrial septal defect of secondary access type. Background: With the continuous improvement of occluder devices, more and more transcatheter atrial septal defect occluders have been used. Methods: Immunofluorescent staining using Clamshell (C. R. Bard Inc., Murray Hill, New Jersey), CardioSE-AL (NMT Medical Inc., Boston, Massachusetts)