1. Slim tube diameter, outer diameter of the catheter is 3-5mm.
2. The tube core has a built-in support spring.
3. The tip of the catheter is made of a soft material to reduce the risk of scratching the nasal mucosa during catheterization.
4. The length and depth of the catheter can be adjusted.
5. It is used to establish a nasopharyngeal airway to prevent airway obstruction caused by tongue posterior fall.