As well as automatically perform some or all of the co-injection process, to provide a mixed injection device capable of preventing the exposure of the infusion bag. Co-injection device 1 operates plug into the first mouth portion of the drug container 10 to an injection needle is held by the first robot arm 21 of the robot arm 21 and the syringe 11 to hold the drug container 10 and injection of the injector 11 a mixed injection operation part 2 of a second robot arm 22 for performing an operation of inserting a needle into the mixture injection port of the infusion bag 12, a mixed injection process chamber 204 for accommodating the mixed injection operation part 2, the medicament container within the co-injection process chamber 204 10 and the supply unit 100 for supplying the injector 11, the infusion bag 12 held by the outside of the co-injection process chamber 204, to position the co-injection port of the infusion bag 12 to the mixed injection communication opening 202b which is formed in the mixed injection process chamber 204 I a, with infusion bag holder 4 for. [Selection Figure] Figure 1混注処理の一部又は全部を自動的に行うとともに、輸液バッグの被曝を防止できる混注装置を提供する。混注装置1は、薬剤容器10を保持する第1ロボットアーム21と注射器11の注射針を上記第1ロボットアーム21により保持されている上記薬剤容器10の口部に差し込む動作及び上記注射器11の注射針を輸液バッグ12の混注口に差し込む動作を行う第2ロボットアーム22とからなる混注動作部2と、上記混注動作部2を収容する混注処理室204と、上記混注処理室204内に薬剤容器10及び注射器11を供給する供給部100と、上記混注処理室204の外側で輸液バッグ12を保持し、この輸液バッグ12の混注口を上記混注処理室204に形成された混注連通口202bに位置させる輸液バッグ保持部4と、を備える。【選択図】図1
