药（械）准字	苏扬药管械（准）字2005第1660069（更）号	灭菌方式	环氧已烷
有效期	24（月）	一次性使用	是

插管a型	md021-c
oral pharyngeal airway (a type)	md021-c

material: is made by the medical non-toxic high polymer material.

structure: the connecting pipe by the nose and the attachment is composed.