1. Adult head and neck, left face is detachable to exposevertical section and allow observation of whole process

2. Precise anatomical structure: nasal cavity, superiorturbinate, middle turbinate, inferior turbinate, oral cavity,tongue, teeth, throat, trachea, etc

3. It can be intubated through nose, mouth and trachea, andthe simulated sputum can be sucked out when theoperation is correct

4. Tracheotomy care