研究单位：[1]Chinese Academy of Medical Sciences,Fuwai Hospital[2]Henan Province People's Hospital Zhengzhou,Henan,China,450003[3]XiangYa Hospital CentralSouth University Changsha,Hunan,China,410008[4]The First Affiliated Hospital of Kunming Medical University Kunming,Yunnan,China,650032
研究目的：
The purpose of this study is to evaluate the efficacy and safety of minimally invasive transthoracic device closure of ventricular septal defect. This is a multi-center randomized controlled trial. Because of the characteristics of this surgical clinical trials, surgeons, ultrasonic department doctors, anesthesiologists, operating room nurses and intensive care unit nurses are all need to be informed. Therefore the results of this trial need to be system evaluated through objective methods to reduce bias.
