The Cardiac Vein I consists of femoral vein, superior vena cava, inferior vena cava, aortic arch of left and right atrium/ventricle, pulmonary vein, and bicuspid and tricuspid valve and aortic valve according to different needs;

It mainly simulates common heart diseases such as atrial septal defect and patent foramen ovale;

The function of the Heart and Blood Vessels model is simple and clear, with strong pertinence, and it is convenient to replace different pathological models with various joints.