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Background Trans-catheter device closure is an alternative treatment for selective patients with coronary artery fistulae (CAF).Currently available technology is limited for closure of CAF with tortuous coronary artery to the drainage.The Objective of this study was to evaluate the technical feasibility, safety, and efficacy of the new device Amplatzer duct occluder Ⅱ (ADO Ⅱ) for closure of coronary artery fistula (CAF).