PROBLEM TO BE SOLVED: To provide a medical connector allowing simplification of a configuration of a lock mechanism maintaining fitting between a first pipe and a second pipe while securing a push-in amount for sealing the first pipe and the second pipe.SOLUTION: A medical connector includes: a first pipe 11 formed with an expanded inclined face 12 in which an inner circumferential face expands to one end side and formed with a lock male screw part 13 on an outer circumference of the one end a second pipe 21 formed with a contracted inclined face 22 fitted in the expanded inclined face 12 of the first pipe 11 a lock pipe 31 provided on an outer circumference of the second pipe 21 and screwed onto the lock male screw part 13 a first facing member 41 which is provided on an outer circumference of the first pipe 11 and whose getting-out is prevented by abutting on the lock male screw part 13 a first engagement part 51 formed in the first facing member 41 a second facing member 61 which is provided on an outer circumference of the lock pipe 31 and whose getting-out from the another end of the lock pipe 31 is prevented and a second engagement part 71 formed in the second facing member 61 and engaging with the first engagement part 51.COPYRIGHT: (C)2014,JPO&INPIT【課題】第1の管と第2の管とをシールするための押し込み量を確保しつつ、第1の管と第2の管との嵌合を維持するロック機構の構成を簡単にすることのできる医療用コネクタを提供する。【解決手段】内周面が一端側へ拡開する拡開傾斜面12とされ、一端の外周にロック雄ねじ部13が設けられた第1の管11と、外周面が、第1の管11の拡開傾斜面12に嵌合する縮閉傾斜面22とされた第2の管21と、この第2の管21の外周に設けられ、ロック雄ねじ部13に螺合するロック管31と、第1の管11の外周に、ロック雄ねじ部13に当接して抜け出るのを防止された第1の対向部材41と、この第1の対向部材41に設けられた第1の係合部51と、ロック管31の外周に設けられ、ロック管31の他端から抜け出るのを防止された第2の対向部材61と、この第2の対向部材61に設けられ、第1の係合部51と係合する第2の係合部71とを備える。【選択図】図1
