Sanofi
Supplementary device for an injection device

Abstract:

In one aspect the present disclosure refers to a supplementary device for an injection device, the supplementary device comprising: a body attachable to a housing of the injection device, the body having a first portion facing towards the housing when attached to the housing, at least one light source attached to the body, and at least a first optical coupling located in or at the first portion, connected to the at least one light source in a light transmissive way and optically connectable to a second optical coupling arranged in or on the housing.