PROBLEM TO BE SOLVED: To provide a connector capable of safely, easily, and rapidly performing an operation.SOLUTION: The connector 1 includes: a medicine side mounting member 2 on which the first medicine container 100 and the second medicine container 200 are mounted a liquid side mounting member 3 which is separably connected to the medicine side mounting member 2 and on which the first liquid container 300 and the second liquid container 400 are mounted and a separation mechanism 8 for separating the medicine side mounting member 2 from the liquid side mounting member 3. In a state where the medicine side mounting member 2 is connected to the liquid side mounting member 3, the first connection part 512 is connected to the third connection part 712, and the second connection part 522 is to the fourth connection part 722. When the liquid side mounting member 3 is separated from the medicine side mounting member 2, the first connection part 512 and the second connection part 522 are exposed, and the diameter contraction parts of respective external cylinders in the first syringe and the second syringe become connectable to the first connection part 512 and the second connection part 522.COPYRIGHT: (C)2009,JPO&INPIT【課題】安全で、容易かつ迅速に操作を行うことができる接続具を提供する。【解決手段】接続具1は、第1の薬剤容器100および第2の薬剤容器200が装着される薬剤側装着部材2と、薬剤側装着部材2に対して離脱可能に連結し、第1の液体容器300および第2の液体容器400が装着される液体側装着部材3と、薬剤側装着部材2から液体側装着部材3を離脱させる離脱機構8とを備えている。薬剤側装着部材2と液体側装着部材3とが連結した状態では、第1の接続部512と第3の接続部712とが接続し、第2の接続部522と第4の接続部722とが接続している。薬剤側装着部材2から液体側装着部材3を離脱させると、第1の接続部512および第2の接続部522が露出し、第1の接続部512および第2の接続部522に、それぞれ第1のシリンジおよび第2のシリンジの各外筒の縮径部が接続可能となる。【選択図】図2