The invention relates to a multifunctional applicator 6 for mobile use having an applicator plug 7, a supply tube 8, a Y-piece 9, fork tubes 10 and a nose piece 11 with prongs 12, wherein the applicator plug 7 comprises a pressure chamber 21 that has a humidifier interface 17 for connection with a high flow therapy device 1, an oxygen supply port 13 having an opening diameter of at least 1 mm, and a therapy air supply port 14 for the supply tube 8, the humidifier interface 17 and the oxygen supply port 13 within the pressure chamber 21 each having an upper and a lower valve seat 23, 25 that are provided with a seal 22 and a valve body 24 being movable between said valve seats 23, 25 and said valve body 24 being subjected to a force by a helical compression spring 26 from the direction of the oxygen supply port 13 and on the other hand being pushed against the upper valve seat 25 by an actuating element 28 of the high flow therapy device 1 when the applicator plug 7 is locked in place on the high flow therapy device 1.本發明關於一種用於移動使用的多功能治療器(6),其包含:治療器插件(7);供應管(8);Y形件(9);叉管(10);以及具有分導管(12)的鼻架(11),其中治療器插件(7)包含:具有用於與高流量治療裝置(1)連接的加濕器接口(17)之壓力室(21);具有至少1mm的開口徑的氧氣供應口(13);用於供應管(8)的治療氣體供應口(14),在壓力室(21)中的加濕器接口(17)及氧氣供應口(13)各具有上部閥座(23)及下部閥座(25),其提供有密封件(22)及在上部閥座(23)與下部閥座(25)之間可移動的閥主體(24),且閥主體(24)藉由螺旋壓縮彈簧(26)受到來自該氧氣供應口(13)方向的力,且另一方面當治療器插件(7)被鎖定在高流量治療裝置(1)上的位置時,該閥主體(24)藉由高流量治療裝置(1)的作動元件(28)被推往上部閥座(25)。1‧‧‧高流量治療裝置7‧‧‧治療器插件13‧‧‧氧氣供應口15‧‧‧治療器插件的頂部16‧‧‧治療器插件的底部21‧‧‧壓力室22‧‧‧密封件24‧‧‧閥主體25‧‧‧上部閥座26‧‧‧螺旋壓縮彈簧28‧‧‧作動元件
