FIELD: medicine.SUBSTANCE: invention refers to medical equipment, namely disposable injectors. A disposable injector with a body wherein or whereon there are respective, at least widely separated at least one mechanical spring-restrained electric storage, at least one cylinder-piston assembly at least intermittently filled with an active substance, at least one piston actuating plunger, and at least one starter unit. The spring-restrained electric storage comprises at least one pre-loaded spring element. At least a portion of the piston actuating plunger is arranged between the spring-restrained electric storage and the piston of the cylinder-piston assembly. The spring-loaded piston actuating plunger has a pull bar which comprises at least one support surface within a back end thereof. Body-supported, hinged or flexural elastic locking elements a locking position of which is provided by the starter unit positioned in the locking position and presented in the form of a cap-shaped press button adjoin the support surface or support surfaces. The locking elements found in the locking position are mounted so that to be impacted by internal or external spring loads squeezing them out. The starter element has a free position which makes the locking elements release. The body has an area of a side surface having a flexible fixation area to mount the cylinder-piston assembly (100).EFFECT: simplified structure, provided accurate and solid, reliably sterile position of the cylinder-piston assembly when in storage and in use.6 cl, 20 dwgИзобретение относится к медицинской технике, а именно к одноразовым инъекторам. Одноразовый инъектор с корпусом, в котором или на котором - соответственно, по меньшей мере, местами - расположены, по меньшей мере, один механический пружинный энергоаккумулятор, по меньшей мере один, заполняемый, по меньшей мере, время от времени активным веществом блок цилиндр-поршень, по меньшей мере, один плунжер управления поршнем и, по меньшей мере, один бл
