Methods and systems for a cartridge assembly for use with an injection system are provided. An example cartridge assembly may include an ampule containing a pharmaceutical product that is sealed at a distal end with a pierceable diaphragm. The cartridge assembly may also include a hub comprising a proximal portion defining a cavity that is configured to engage the distal end of the ampule and a piercing member positioned within the cavity. The piercing member may include a fluid pathway between a proximal end portion comprising an opening and a distal end in fluid communication with a distal opening of the hub. The proximal end portion may engage the pierceable diaphragm, and the piercing member may apply a force to the pierceable diaphragm in the inactivated position without penetrating the pierceable diaphragm.
