Inflatable airbag cap and medical endoscope

The utility model provides an inflatable air bag cap and a medical endoscope, which can realize the state switching between a brim state and a non-brim state in a body, reduce the drawing frequency of the endoscope and reduce the stimulation or damage to tissues in the body. The inflatable air bag cap comprises a connecting ring used for being connected with an endoscope insertion part, an air bag connected to the connecting ring and an air channel communicated with the air bag. When the air bag is inflated through the air channel, the air bag expands to be unfolded and is used for extending out of the far end of the endoscope insertion part to form a brim; when the air bag is deflated or deflated through the air channel, the air bag shrinks to remove the formed brim. 本实用新型提供了一种充气式气囊帽及医用内窥镜，其能够在体内实现有无帽檐的状态切换，降低内镜抽拔次数，减少对体内组织的刺激或损伤。该充气式气囊帽包括用于连接内镜插入部的连接环、连接于连接环的气囊以及连通于气囊的气路通道。当气囊通过气路通道被充气时，气囊膨胀以展开，用于伸出该内镜插入部的远端以形成帽檐；当气囊通过气路通道被放气或抽气时，气囊收缩以撤去所形成的帽檐。