PROBLEM TO BE SOLVED: To prevent a solution remaining in a by-pass with an administered infusion container connected thereto from entering a main pipe and being mixed with an anticancer agent starting administration next in which, in an infusion set to perform an intravenous drip infusion of multiple treatment medicine, a solution in a main pipe positioned upward more than a by-pass is made to naturally flow in the by-pass with an administered infusion container connected thereto, and thereby the solution remaining in the by-pass is prevented from being mixed into the main pipe.SOLUTION: In an infusion set for connecting an infusion container in an upstream side of a main pipe and a by-pass to perform an intravenous drip infusion, one or more branch pipes 5 are used which have a main pipe upstream side connecting part 5a, a by-pass side connecting part 5c protruded obliquely downward and a main pipe downstream connecting part 5b.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】複数の治療用医薬を点滴静脈注射するための輸液セットにおいて、投与が終了した輸液容器が接続された側管中に、当該側管より上方に位置する主管中の溶液が自然に流入させることで当該側管に残存する溶液の主管中への混入を妨げ、投与が終了した輸液容器が接続された側管中に残存する溶液が主管内へ侵入して次に投与を開始した抗癌剤と混合されてしまうことを防止する。【解決手段】主管ならびに側管の上流側に輸液容器を接続して点滴静脈注射を行うための輸液セットにおいて、主管上流側連接部5aと斜め下方に突出した側管側連接部5cと主管下流側連接部5bとを有する1以上の分岐管5を用いる。【選択図】図1
