PROBLEM TO BE SOLVED: To provide a chemical liquid administration device capable of inhibiting a connection state of housings from being released carelessly while chemical liquid is fed.SOLUTION: A chemical liquid administration device 10 includes: a first housing 20 for holding a chemical liquid storage part 21 in which chemical liquid is stored； a second housing 30 for holding a drive mechanism 31 that generates drive force for feeding the chemical liquid in the chemical liquid storage part into a living body, which can be connected to or separated from the first housing； a cradle 40 that can be connected to or separated from the first housing； and a lock mechanism 50 that can switch a state between a connection state in which the first housing and the second housing are connected to each other, and a released state in which the connection is released. The cradle includes a holding part 60 for holding the connection state of the first housing and the second housing by the lock mechanism in a state in which the cradle is connected to the first housing.SELECTED DRAWING: Figure 6ACOPYRIGHT: (C)2020,JPO&INPIT【課題】薬液の送液中に、ハウジング同士の連結状態が不用意に解除されることを抑制できる薬液投与装置を提供する。【解決手段】 薬液投与装置１０は、薬液が貯蔵された薬液貯蔵部２１を保持する第１ハウジング２０と、薬液貯蔵部内の薬液を生体内に送液する駆動力を発生する駆動機構３１を保持し、第１ハウジングに対して連結分離可能な第２ハウジング３０と、第１ハウジングに対して連結分離可能なクレードル４０と、第１ハウジングと第２ハウジングとが連結された連結状態と連結が解除された解除状態とを切り替え可能なロック機構５０と、を有する。クレードルは、クレードルと第１ハウジングとが連結されている状態で、ロック機構による第１ハウジングと第２ハウジングとの連結状態を保持する保持部６０と、を有する。【選択図】図６Ａ
