PROBLEM TO BE SOLVED: To provide a male connector enabling a patient having a deteriorated finger force to easily attach/detach a female connector or a cap from/to the male connector, and enabling sufficiently sealing a gap between the fixed male connector and the female connector or the cap.SOLUTION: A male connector 20 for attaching/detaching a female connector or a cap 30 from/to a cylindrical connection part 24 includes in a ring-like sealing member 28 made of an elastic material and inserted in a sticking state to a tip side wall surface 26a and a base end side wall surface 26b, into a recessed groove 26 provided around the outer peripheral surface of the connection part 24, a tip side extension part 28a projecting to the radial direction outer side from the recessed groove 26 on the tip side, and a base end side extension part 28b projecting to the radial direction outer side from the recessed groove 26 on the base end side. The base end side extension part 28b has an outer peripheral surface of a curved surface projecting to the radial direction outer side, and is inclined in a base end direction, and when fixing the female connector or the cap 30 to the connection part 24, the end part in the radial direction outer side of each of the extension parts is pressed and stuck to the inner wall surface of the female connector or the cap 30.COPYRIGHT: (C)2015,JPO&INPIT【課題】指の力が衰えた患者でも雄コネクタに雌コネクタ又はキャップを簡単に着脱でき、且つ装着した雄コネクタと雌コネクタ又はキャップとの隙間を十分にシールできる雄コネクタを提供する。【解決手段】筒状の連結部24に雌コネクタ又はキャップ30を着脱する雄コネクタ20は、連結部24の外周面に周設した凹溝26に、その先端側壁面26a及び基端側壁面26bに密着状態で挿入した弾性材料から成るリング状のシール部材28に、先端側に凹溝26より径方向外側に突出した先端側延出部28aと、基端側に凹溝26より径方向外側に突出した基端側延出部28bとを有し、基端側延出部26bは外周面が径方向外向きに凸な曲面で且つ基端方向に傾斜しており、連結部24に前記雌コネクタ又はキャップ30を装着した際に、前記雌コネクタ又はキャップ30の内壁面に、前記各延出部の径方向外側の端部が押圧されて密着する。【選択図】図1
