Features:
1. Realistic anatomy: tongue, cavum oris, pharynx, larynx, chordae
vocals, trachea
2. Oral and nasal intubation
3. Lifelike material
4. Simulate head tilt to operate conveniently
5. Directly observe the expansion of lungs and stomach by insuf
flating air into the tube and stomach so as to verify if the tube
position is right.
