Novo Nordisk A/S
Drug delivery system with dose capturing

Abstract:

Drug delivery system comprising expelling means for expelling an amount of drug from a reservoir, the expelling means comprising dose setting means (11, 21, 122) allowing a user to set a dose to be expelled, and actuation means (123) for releasing the drug expelling means to expel the set dose. The dose setting means comprises a drive sleeve (22) adapted to be rotated to set a dose, and a rotatable driven member (21) arranged for being rotationally driven by the drive sleeve (22) in a slaved rotational movement by means of a torque transfer coupling between the drive sleeve (22) and the rotatable driven member (21). The system further comprises an electronically controlled capturing system for capturing data representing a property related to the amount of drug expelled from the reservoir by the expelling means, and switch means configured to initiate an action within the electronically con-trolled capturing system upon occurrence of the slaved rotational movement.