PROBLEM TO BE SOLVED: To provide an endoscope system, which allows the degree of freedom in arranging a liquid feeding connector and can surely prevent leakage of a liquid from the liquid feeding connector with a simple structure.SOLUTION: A liquid feeding connector 54 provided on a liquid feeding tank includes: an air feed side connecting tube 56 and a liquid feeding side connecting tube 57 to which a multi-lumen tube 53 is connected a mouthpiece receiving part 58 a spherical ball valve 59 and a connector body 60. The connector body 60 includes: a first liquid feeding passage 65 to which the liquid feeding side connecting tube 57 is fitted a second liquid feeding passage 66 in which a liquid feeding mouthpiece 39 is inserted and fitted and a liquid feeding side connecting passage 67 to which the first liquid feeding passage 65 and the second liquid feeding passage 66 are connected with eccentricity. The liquid feeding side connecting passage 67 has a locking taper part 71 where the ball valve 59 is locked. When the liquid feeding mouthpiece 39 is connected to the second liquid feeding passage 66, locking of the ball valve 59 is released to secure a passage.COPYRIGHT: (C)2014,JPO&INPIT【課題】送液用コネクタの配置に自由度を持たせるとともに、簡単な構造で送液用コネクタからの液漏れを確実に防ぐことができる内視鏡システムを提供する。【解決手段】送液タンクに設けられた送液用コネクタ54は、マルチルーメンチューブ53が接続される送気側接続管56及び送液側接続管57、口金受け部58、球状のボール弁59、コネクタ本体60を有する。コネクタ本体60は、送液側接続管57が取り付けられる第1送液通路65、送液口金39が挿入して取り付けられる第2送液通路66、第1送液通路65及び第2送液通路66が偏心して連結される送液側連結通路67を有する。送液側連結通路67はボール弁59を係止する係止テーパー部71を有する。第2送液通路66に送液口金39が接続されるとボール弁59の係止が解除され、流路が確保される。【選択図】図6
