EP2274032A1 — Medication delivery device

USPTO Abstract

The application refers to a medication delivery device (1) comprising: a medication receptacle (6), a dosing mechanism comprising: a piston rod (17) a drive device (19), a dose setting member (27) and a dose limiting member (28) which prevents the setting of a dose of medication which exceeds an amount of medication contained in the medication receptacle (6) and a housing (3). The dose limiting member (28) is designed for axial movement in a proximal direction with respect to the piston rod (17) during dose setting and comprises a first stop element (35) and the piston rod (17) comprises a second stop element (36). The first and second stop elements (35, 35) stop an axial movement of the dose limiting member (28) in the proximal direction with respect to the piston rod (17) when the first and second stop elements (35, 36) catch, thereby limiting a movement of the dose setting member (27) for increasing a set dose of medication to be delivered. The dose limiting member (28) and the piston rod (17) only interact directly, when the first and second stop elements (35, 36) catch.