(before 1 + 8) A manual injection device (1) whereby adjusted doses of a liquid medicine can be injected from a medical reservoir through an injection needle (2) by releasing a power reservoir (10) into the device, the power reservoir (10) being adapted to be totally or partially released by actuating a user-operated release element (3, 13, 20), located at, or near the upper end of the injection device (1), the upper end being the end of the injection device (1) that is opposite the injection needle (2), the power reservoir (10) being adapted to be actuated by rotating an adjustment element of dose (7, 21) rotatably mounted, characterized in that the manual injection device further comprises； a drive element (8, 36, 37, 38) rotatably arranged, which is adapted to engage, at least partially, with a drive track of an associated piston rod (9), the drive element being adapted (8, 36, 37, 38) to be located in a first axial position when the dose adjustment element (7, 21) is in a dose adjustment position, the actuating element (8, 36, 37, 38) for being located in a second axial position when the dose adjustment element (7, 21) is in a dose injection position, the actuating element (8, 36, 37, 38) being adapted to release accumulated energy in the power tank (10) when the drive element (8, 36, 37, 38) is in its second axial position.(antes 1 + 8) Un dispositivo de inyección manual (1) mediante el que se pueden inyectar dosis ajustadas de un medicamento líquido desde un depósito médico a través de una aguja de inyección (2) mediante liberar un depósito de potencia (10) en el dispositivo, estando adaptado el depósito de potencia (10) para ser liberado total o parcialmente mediante el accionamiento de un elemento de liberación (3, 13, 20) accionable por un usuario, situado en, o cerca del extremo superior del dispositivo de inyección (1), el extremo superior siendo el extremo del dispositivo de inyección (1) que es opuesto a la aguja de inyección (2), estando el depósito de
