1. The model is in lying position with realistic texture
2. Accurate anatomical structure: sternum, xiphoidprocess, ribs , intercostal space can clearly palpable,etc.
3. Puncture training in pericardial area and inferiorto the junction of xiphoid process and the 7thcosticartilage is available, when the puncture needleenters pericardial cavity, there is liquid coming out