Patent ID: 9402959
Filing Date: 2016-08-02
CPC Classification: A61M

Claim Text:
1. An assembly for a drug delivery device comprising a housing body having a longitudinal axis; a drive assembly having a drive member, the drive member being configured to be axially displaced with respect to the housing body during operation of the drive assembly for at least one of (i) setting a dose of a drug or (ii) dispensing the dose of the drug; and a display assembly having a display and an indicator element, the indicator element being axially displaceable with respect to the housing body along the longitudinal axis; wherein the display is configured such that it displays a first state through a window where the indicator element is only visible through the window when the indicator element is in a first position, and where the display switches to a second state when the indicator element is displaced away from the first position and is no longer visible through the window and only the drive member or another element of the drive assembly is visible through the window, and the drive assembly is configured such that the drive member transfers a force to the indicator element which force displaces the indicator element away from the first position when the drive assembly carries out a priming step, where a switch from the first state to the second state occurs during the priming step when a first portion of the drug is dispensed for a first time, wherein the drive member is operable to hold the indicator element in a resiliently biased position when the drive member is in a rest position; wherein the drive member is inoperable to transfer said force to the indicator element when the indicator element is in the resiliently biased first position, and wherein the drive member is operable to transfer said force to the indicator element when the indicator element is in an interaction position; and wherein the assembly is configured such that the indicator element can move radially from the resiliently biased position to the interaction position when the drive member is displaced by a predetermined distance from the rest position in a first axial direction.