Sanofi
Drug delivery device with at least one transparent region of housing

Abstract:

The present disclosure relates to a drug delivery device comprising: a housing; a moveable number sleeve disposed within the housing and having numbers printed thereon; and a transparent window occupying an aperture of the housing and covering the number sleeve such that the number sleeve is visible through the transparent window. At least one region of the housing located adjacent to the transparent window is transparent to visible light and is in optical communication with the transparent window.