Autoinjector with uniform pressure application of single container

A non-gastrointestinal delivery of a benefit agent with an autoinjector configured to reduce a force acting on a primary container of benefit agent during activation of the autoinjector. The primary container may be disposed within a pressure chamber of the autoinjector such that pressure increased within the pressure chamber during activation is applied to a stopper of the primary container and an outer surface of a sidewall of the primary container. Accordingly, a pressure difference between the volume of the primary container and the pressure chamber may be reduced or eliminated. Accordingly, a force acting on the primary vessel in response to an increase in pressure of the pressure vessel may be reduced or eliminated. Various configurations are also provided to improve relative movement between the stopper and the sidewall of the primary container for more reliable injection. 一种利用自动注射器的有益剂的非胃肠道输送，该自动注射器被配置成减少在自动注射器的激活期间作用于有益剂的一次容器上的力。该一次容器可以设置在自动注射器的压力腔室内，使得在激活期间在压力腔室内增加的压力施加到一次容器的止挡件和一次容器的侧壁的外表面。相应地，一次容器