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