An active close-type laryngeal mask comprises: a catheter； a cover connected to the front end of the catheter； a cuff disposed at an end edge of the cover ring； and an inflation tube connected to the cover, when the cover enters the patient a throat, and the balloon is inflated by the inflation tube, and is attached to the throat tissue of the injured patient, and forms an annular fitting track on the surface thereof； a ring groove disposed along the fitting track； An air suction pipe communicating with the groove of the ring, the opening of the air suction pipe is disposed on an inner wall of the ring groove, and extends downwardly from the cover body to pass through the cover body, so that the ring groove has a complete Contour； when the suction pipe is used to draw air into the groove of the ring, a negative pressure is formed in the groove of the ring relative to the surrounding environment, so that the cover can be more closely attached to the throat tissue of the injured patient. Provides a stable positioning effect.一種主動密合式喉頭罩，包括：一導管；一連設於該導管前端之罩體；一設置於該罩體環端緣之罩囊；一連設於該罩囊之充氣管，當罩體進入患者喉頭，且該罩囊藉由該充氣管充氣後，會貼合於傷病患的喉頭組織，並於其表面形成一環狀的貼合軌跡；一沿該貼合軌跡設置之環凹槽；一與該環凹槽連通之抽氣管，該抽氣管之開口係設置於該環凹槽之內壁，並向下延伸由該罩囊穿出該罩體，使得該環凹槽具有一完整的輪廓；當利用該抽氣管對環凹槽中抽氣時，會於該環凹槽中形成相對於周圍環境的負壓，令該罩囊能更緊密地貼合於傷病患的喉頭組織，而提供穩定定位的效果。
