PROBLEM TO BE SOLVED: To provide a coinjection device with which it is possible to limit the omission of preparatory work required aside from a coinjection process performed using a coinjection device.SOLUTION: The coinjection device executes a coinjection process in which medicine is sucked from a medicine container using a syringe for each preparation data as an output object, and the medicine is injected from the syringe into an infusion container. Aside from the coinjection process, the coinjection device determines whether or not preparatory work should be carried out before executing the coinjection process, and can output a list of preparation data and a preparation schedule list sheet representing necessity/unnecessity of the preparatory work of each of the preparation data.SELECTED DRAWING: Figure 32COPYRIGHT: (C)2017,JPO&INPIT【課題】混注装置で行われる混注処理とは別に必要となる事前作業の実施漏れを抑制することが可能な混注装置を提供すること。【解決手段】混注装置は、出力対象の調製データごとに、前記調製データに基づいて薬品容器から注射器で薬品を吸引すると共に前記注射器から輸液容器に前記薬品を注入する混注処理とは別に前記混注処理の実行前に事前作業が必要であるか否かを判断し、前記調製データの一覧と前記調製データ各々における前記事前作業の要否とが表示される調製予定一覧シートを出力可能である。【選択図】図32