< Topic >The positive pressure leakage prevention equipment for artificial respiration which prevents the neutron leakage of positive pressure from the opening at the time of artificial respiration of the back valve mask which uses lifesaving disposal the time, is offered.SolutionsIn median entity and the both sides it forms the crookedness unrestricted time tune piece in the neutron leakage prevention equipment, provides the upper lip fit section and the lower lip fit section on the surface, it provides with upper gearwheel fit channel and lower gearwheel fit channel in the top and bottom which is interposed into the buccal cavity back, from formation position of the upper gearwheel fit channel forms the position of the lower gearwheel fit channel much more in the front. In addition, as on the median of entity the adjustment hole and the air hole each it forms, interposing the pushing pressure board from the adjustment hole, it features that you push down tongue. Furthermore, the pedestal which receives with the tooth and the alveolar ridge the Inlaying equipment is done in the upper gearwheel fit channel and the lower gearwheel fit channel.< Choice figure >Drawing 1【課題】救命処置を時に使用するバック・バルブ・マスクの人工呼吸において、口からの陽圧の漏れを防止する人工呼吸用陽圧漏れ防止用具を提供する。【解決手段】漏れ防止用具には、中央の主体とその両側に屈曲自在の折曲片を形成し、表面に上唇嵌合部と下唇嵌合部を設け、裏面の口腔内に挿入する上下に上歯嵌合溝と下歯嵌合溝とを設け、上歯嵌合溝の形成位置より下歯嵌合溝の位置を前方に段違いに形成している。また、主体の中央に調整孔と空気孔とを各々形成すると共に、調整孔より押圧板を挿入して舌を押し下げることを特徴としている。更に、上歯嵌合溝と下歯嵌合溝には、歯牙と歯槽堤とを受ける台座を嵌装してある。【選択図】図1