INJECTION DEVICE WITH TWO-WAY SLIP CLUTCH

摘要

Injection device comprising a) a housing (1-3) with a reservoir (R) for an injectable product, b) an actuating button (27) which, in order to set a product dose, can be moved relative to the housing (1-3) in a dosing direction, which increases the dose, and a correcting direction, c) a delivery member (10) for discharging the dose that has been set, d) a slip clutch (3, 27) with a locking element and mating locking element which, in locked engagement with one another, couple the actuating button (27) to the housing (1-3) in a form-fit and force-fit connection during a movement in the dosing direction or the correcting direction, in each case in discrete locking positions, e) and a spring member (32) which provides a spring force counter to the movement of the actuating button (27) in at least one of the directions, f) wherein the locking element and the mating locking element are shaped in such a way that, when in locked engagement, they provide less resistance to the movement in the at least one of the directions than they do to the movement in the other direction.