Four patients with intracardiac foreign body, in whom central venous catheter was accidentally cut and its fragment was migrated into the cardiovascular system, are presented. One patient was surgically treated. Other patients were treated using transvascular catheter technique. In one of three patients, however, a chorda of tricuspid valve was hooked by a grasping catheter and the patient was forced to surgical removal of both a catheter fragment and the grasping catheter. We discussed the method and problems to remove intra-cardiovascular foreign body.