Sanofi
Dose indicating mechanism for a drug delivery device

Abstract:

A dose indicating mechanism for a drug delivery device for displaying of a dose of a medicament to be dispensed by the drug delivery device includes an elongated housing extending in an axial direction and having at least a first window and a second window that are spaced apart from each other in axial direction. The dose indicating mechanism further includes a dose indicating sleeve movably disposed in the housing and having at least one dose indication coinciding with the first window to display the size of a dose actually set, and an indicator operably engaged with the dose indicating sleeve and axially displaceable relative to the housing to coincide with the second window for indicating an operational status of the dose indicating mechanism.