PROBLEM TO BE SOLVED: To provide an infusion set which, even if a plurality of infusion lines are added to an existing infusion line, is unlikely to cause route differences between positions where the infusion lines are added and the position of joining the liquid in the existing infusion line, and also to provide a connector for use in the infusion set.SOLUTION: An infusion set according to the present invention includes: a first infusion line set comprising a first infusion line with a mixed injection port formed therein and a connector comprising a male connector portion insertable into the mixed injection port, and a female connector portion connectable with a second infusion line. Inside the connector is provided a partition portion for partitioning the flow channel inside the connector into an inflow channel into which the liquid flows from the mixed injection port of the first infusion line and an outflow channel for letting the liquid which flowed into the inflow channel back to the mixed injection port when the male connector portion is in a state being connected to the mixed injection port.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】既存の輸液ラインに対して別の輸液ラインを複数増設する場合であっても、輸液ラインの増設位置に基づく既存の輸液ラインを流れる液体との合流箇所までの経路差が生じ難い輸液セット、及びこの輸液セットに用いるコネクタを提供すること。【解決手段】本発明に係る輸液セットは、混注口が形成された第1輸液ラインを構成する第1輸液ラインセットと、前記混注口に挿入可能な雄コネクタ部、及び第2輸液ラインを接続可能な雌コネクタ部を備えるコネクタと、を備え、前記コネクタの内部には、前記雄コネクタ部を前記混注口に挿入した状態で、前記コネクタ内の流路を、前記第1輸液ラインの前記混注口から液体が流入する流入流路と、前記流入流路に流入した液体を前記混注口に戻す流出流路と、に仕切る仕切部が設けられている。【選択図】図3
