Injection device, in particular autoinjector, for the simultaneous delivery of several drugs

摘要

The invention relates to an injection device (1) for the simultaneous delivery of several drugs. The injection device (1) comprises a support housing (5), an activation sleeve (8) surrounding the support housing (5), at least two carpules (9, 11), a first drive assembly (13) for delivering the medicaments, a securing device (14). a needle assembly (17), a needle guard (20), and a second triggerable drive assembly (21) for the needle assembly (17). The carpules (9, 11) are arranged side by side in cross-section. The first drive assembly (13) has a drive element (22) with one of the number of cartridges (9, 11) the same number of piston rods (23, 24), which form a related assembly. At least one of the piston rods (23, 24) has a hollow cylindrical shape and is designed to be closed on the piston side, a first drive means (26) of the first drive assembly (13) being arranged inside the same. The first drive means (26) can be arranged in a receiving part (27) of the drive element (22) arranged laterally next to the piston rods (23, 24), the receiving part (27) being associated with the piston rods (23, 24) Building unit.