PROBLEM TO BE SOLVED: To provide a connector which can suppress leakage of a residual liquid in a connection adapter when a communication state with a mixed injection member is made an off state, after using the connection adapter.SOLUTION: A connector 1 comprises a connection adapter 10, a connection cover 5, and a mixed injection member 20. The connection adapter 10 provides a pair of engagement parts 12K in two directions of the side part of an intermediate part 12, forms an R part 11R having a first curvature on an endmost end DE side of a terminal part 11. The connection cover 5 forms a pair of upper paths 5PU in two directions of the side part S over an upper side to a lower side of an inner wall of an upper part 5U, forms a step part 5UD on the lower part D side of the inner wall, and forms a pair of engagement parts 5UM in two directions of the side part S. The mixed injection member 20 has a port 21, a plug body 30, and a cap 21C. The plug body 30 has a projection part 31 on the upper part U side on an almost center part, the projection part 31 forms a narrow hole 35 from the upper part U to the lower part D side of the almost center part, and the upper part U side of the projection part 31 forms an almost R-state groove part 32 having a second curvature, or the upper part U is made flat.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT【課題】接続アダプタの使用後、混注部材との連通状態をオフにした際に、接続アダプタ内の残液が漏れないようにした接続器具を提供すること。【解決手段】接続器具1は、接続アダプタ10と接続カバー5及び混注部材20を有する。接続アダプタ10は、中間部12の側部の二方向に一対の係止部12Kを突設し、末端部11の最末端DE側に第1の曲率を有するR部11Rを形成し、接続カバー5は、上部5Uの内壁の上部側から下部側に亘って、側部Sの二方向に一対の上部通路5PUを形成し、内壁の下部D側に段部5UDを形成し、側部Sの二方向に一対の係合部5UMDを形成している。混注部材20は、ポート21と栓体30とキャップ21Cを有する。栓体30は、略中央部の上部U側に突起部31を形成し、突起部31は略中心部の上部Uから下部D側に向けて細孔35を形成し、突起部31の上部U側は第2の曲率を有する略R状の溝部32を形成、または平坦に形成している。【選択図】図5
