RESETTABLE DRUG DELIVERY DEVICE

摘要

A drive member for driving a piston rod in a drug delivery device is provided. The drive member is configured to be driven in a rotational movement by an actuating member. The drive member comprises a track for transmitting a driving load from the actuating member to the drive member. The track comprises both sections running in a distal and sections running in a proximal direction of the drive member. Moreover, a drug delivery device comprising such a drive member is provided.

主权项

1. A resettable drug delivery device for dispensing one or more doses of a drug, comprising:
a housing having a longitudinal axis, a piston rod having a start position relative to the housing and being resettable to the start position, a drive member for driving the piston rod in a dispense operation of the drug delivery device in a distal direction of the drug delivery device and a dose member for actuating the drive member, wherein the dose member comprises a dose button accessible to the user and fixed to the dose member or forming an integral part of the dose member, wherein the drug delivery device is configured such that
the dose member is in a pulled-out position relative to the housing before resetting the piston rod oris moved towards the pulled-out position relative to the housing during resetting the piston rod,wherein the dose member is constrained to an axial movement along the longitudinal axis and operable such that for setting one dose the dose button is either pulled or pushed by the user and for dispensing one dose the dose button is pushed by the user.