A lower body (1) for storing a container (S) containing a fluid to be injected, and an upper body (2) movable in an axial direction relative to the lower body (1) during operation. And an actuator sleeve (10) having a contact end (11) that contacts a user's body, and the container (S) has a piston (P) and an injection needle (A), and the upper portion The body (2) has a piston rod (TP) that moves the piston (P) in the container (S) during injection, and the actuator sleeve (10) is in relation to the lower body (1). A plurality of projecting positions in which at least a part of the actuator sleeve (10) projects from the lower body (1)； and an operating position in which the actuator sleeve (10) enters the lower body (1) in the axial direction. Between The actuator sleeve (10) is in a first protruding position until the manual syringe is operated, and is in a second protruding position after the operation, and the actuator sleeve (10) is connected to the lower body ( 1) or a puncture locking mechanism in cooperation with a component fixed to the lower main body (1) such as a container support, and the piston rod (TP) is supported by the container (S) or the container support The injection lock mechanism is configured in cooperation with the components fixed to the container (S) such as the upper part and the lower main body (1) so that the puncture lock mechanism operates before the injection lock mechanism. The force required for the operation of the puncture lock mechanism is smaller than the force required for the operation of the injection lock mechanism. [Selection] Figure 1手動注射器であって、注入される流体を収容する容器（Ｓ）を格納する下部本体（１）と、作動中に前記下部本体（１）に対して軸方向に移動可能な上部本体（２）と、ユーザーの体と接触する接触端部（１１）を有するアクチュエータースリーブ（１０）とを有し、前記容器（Ｓ）は、ピストン（Ｐ）と注射針（Ａ）とを有し、前記上部本体（２）は、注入中に前記ピストン（Ｐ）を前記容器（Ｓ）内で移動させるピストンロッド（ＴＰ）を有し、前記アクチュエータースリーブ（１０）は、前記下部本体（１）に対し、前記アクチュエータースリーブ（１０）の少なくとも一部が前記下部本体（１）から突出する複数の突出位置と、前記アクチュエータースリーブ（１０）が前記下部本体（１）内へと軸方向に進入した作動位置との間を移動可能であり、前記アクチュエータースリーブ（１０）は、前記手動注射器が作動するまでは第１突出位置にあり、作動後には第２突出
