A cannula device which supplies respiration gas to a patient provided with: a nasal cannula including nasal pipes inserted into nares of the patient a pair of supplying tubes connected to both ends of the nasal cannula respectively a bracket provided at at least one of the nasal cannula or the supplying tubes and a locking part provided at the bracket, and detachably locking a fixture which attaches the nasal cannula on a head of the patient.一種插管裝置係用以將呼吸用氣體供給至患者,其特徵為,具備:鼻孔插管,具有插入至患者的鼻孔之鼻孔管;一對呼吸用氣體的供給管件,與該鼻孔插管的兩端連接;托架,設置在前述鼻孔插管或前述供給管件;以及卡止部,安裝在前述托架並且能夠裝卸地與將前述鼻孔插管固定在患者的頭部之固定具卡止。1‧‧‧插管裝置2‧‧‧鼻孔插管3A、3B‧‧‧導入管4A、4B‧‧‧鼻孔管5‧‧‧供給管件6‧‧‧托架7‧‧‧接頭7A‧‧‧插入管7B‧‧‧連接口12‧‧‧止動圈13‧‧‧固定具13A‧‧‧前端部13B‧‧‧本體部
