The invention relates to a disposable injector with a cylinder/piston unit that can be filled at least temporarily with active substance, with a housing in which a pretensioned and releasable mechanical spring energy reservoir is arranged, and with at least one piston-actuating ram positioned between the spring energy reservoir and the piston of the cylinder/piston unit. The piston-actuating ram has two draw hooks that engage around the housing in some areas. In addition, the piston-actuating ram is separable from the housing by means of the relaxing spring energy reservoir.With the present invention, a disposable injector is developed which, with a small overall size, comprises only a small number of components and, while being easy to handle, ensures safe storage and operation.本發明有關可棄式注射器，設有可至少暫時地以活性物質充填之圓筒/活塞單元、在其中配置預拉伸與可鬆開之機械彈簧蓄能器的外殼、及被定位於該彈簧蓄能器與該圓筒/活塞單元的活塞間之至少一活塞致動柱塞。該活塞致動柱塞具有在一些區域中嚙合環繞著該外殼之二個拉鉤。此外，該活塞致動柱塞係可藉著該鬆開之彈簧蓄能器來與該外殼分開。以本發明，可棄式注射器被開發，其具有小的整體尺寸，包括僅只少數之零組件，且同時易於處理，確保安全之儲存及操作。
