A occluder,It contains a biting body,The occlusal system providesLower jaw teeth engaged,The front end of the bite body is connected with a protective body,When the wearer engages,The protector is located on the outer edge of the lips to achieve the protective effect,And an air vent is penetrated through the biting body and the protective body,And a groove is formed on the protective body,And a fixed body is arranged on the tank body,The fixed body is pivoted with a leaf which can rotate relative to the fixed body；So that when the wearer snaps,To breathe through the noseBreath through your mouth,And drive the blades to rotate,To train and improve the vital capacity of the wearer.一種咬合器，係包含有一咬合體，該咬合體係提供配戴者之上、下顎牙齒咬合，該咬合體前端則連接有一保護體，當配戴者咬合後，該保護體則位於嘴唇外緣達到保護效果，又該咬合體及保護體上貫穿有一吐氣口，而保護體上形成有一槽體，且該槽體上容置有一固定本體，該固定本體上則樞設有一可相對於固定本體上轉動之扇葉；藉此當配戴者咬合時，得以透過鼻子吸氣、嘴巴吐氣之方式進行呼吸，並帶動扇葉轉動，藉以訓練並有效提高配戴者之肺活量。
