| abstract |
Injection system comprising a) a first reservoir module (1) with a first reservoir (5) for a liquid medicament and with a first piston (6) for expelling a medicament dose, b) a second reservoir module (2) with a second reservoir (5) for a liquid medicament and with a second piston (6) for expelling a medicament dose, and c) a mechanical module (4) for adjusting and expelling the medicament dose, for a connection of the mechanical module (4) to either the first or the second reservoir module (1, 2), and a movable expulsion member (30), characterized in that d), in a starting state of the reservoir modules (1, 2), as long as no medicament has been expelled, the first reservoir (5) has a different filling level than the second reservoir (5), and e), in accordance with the difference in filling level, the front of the first piston (6) directed towards the medicament is at a different axial distance (A) from the outlet of the first reservoir (5) than the front of the second piston (6) from the outlet of the second reservoir (5), f) but the force introduction point of the first piston (6) is at the same axial distance (B) from the first connection structure (15) as the force introduction point of the second piston (6) from the second connection structure (15). |