PROBLEM TO BE SOLVED: To provide a nasal cannula which generates less noise in supplying a respiratory gas at a high flow and is less likely to cause dew condensation.SOLUTION: A nasal cannula includes a pair of introducing tubes 3A, 3B which are arranged on both end parts of a cannula body part 2 for circulating a respiratory gas and are connected to a supply tube for the respiratory gas, a pair of nostril tubes 4A, 4B which are arranged in a central part for inserting into nostrils and are respectively formed in an integrated manner, a pair of flow passages 5A, 5B which respectively make a set of the introducing tube 3A, 3B and the nostril tube 4A, 4B communicate inside the cannula body part 2, and a partitioning wall part 6 which partitions between the flow passages 5A, 5B. The flow passages 5A, 5B are bent by the partitioning wall part 6.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】呼吸用気体を高流量で供給しても騒音の発生が少なく、また結露が生じにくい鼻孔カニューラを提供する。【解決手段】呼吸用気体を流通させるカニューラ本体部2に、その両端部に配置され呼吸用気体の供給チューブに接続される一対の導入管3A・3Bと、中央部に配置され鼻孔に挿入される一対の鼻孔管4A・4Bとが、それぞれ一体に形成されるとともに、カニューラ本体部2の内部に、導入管3A・3Bと鼻孔管4A・4Bとをそれぞれ一組ずつ連通状態とする一対の流路5A・5Bと、これら流路5A・5Bの間を仕切る隔壁部6とが設けられ、流路5A・5Bは、隔壁部6によって屈曲させられている。【選択図】 図4
