PROBLEM TO BE SOLVED: To provide means capable of favorably preventing an injection part from being removed and preventing a connection part from getting wet by liquid.SOLUTION: The medical liquid administration device includes: a liquid delivery part including a medical liquid storage part for storing a medical liquid, and a driving mechanism for generating driving force for delivering the medical liquid in the medical liquid storage part into a living body a mounting part 111 on which the liquid delivery part is mounted a coupling part that is liquid-tightly coupled with the medical liquid storage part, when the liquid delivery part is mounted on the mounting part 111 and an injection part 11 including a canula for injecting the medical liquid delivered from the medical liquid storage part via the coupling part, into the living body. A protective member 30 detachably attached to the medical liquid administration device, is mounted on the mounting part 111 in a state where the liquid delivery part is removed, so as to protect the mounting part and retain the coupling part in the liquid-tight state.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2017,JPO&INPIT【課題】注入部が外れること、および連結部が液体によって濡れることを好適に防止することのできる手段を提供する。【解決手段】薬液を貯蔵する薬液貯蔵部および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を備える送液部と、送液部が装着される装着部111、送液部が装着部111に装着された際に薬液貯蔵部に対して液密に連結される連結部、および薬液貯蔵部から連結部を介して送液された薬液を生体内に注入するカニューレを備える注入部11と、を有する薬液投与装置に着脱可能な保護部材30であって、送液部を取り外した状態の装着部111に装着されることにより、装着部を保護するとともに、連結部を液密な状態で維持することができる。【選択図】図7
