INJECTEUR DE MEDICAMENT DU TYPE STYLO AVEC DISPOSITIF ÉLECTRONIQUE SUPPLÉMENTAIRE DE SURVEILLANCE POUR LA SURVEILLANCE DU FONCTIONNEMENT DE L'INJECTEUR
A supplemental device for attachment to an injection device, the supplemental device comprising:a housing；an electromechanical switch arrangement having an open state and a closed state , the electromechanical switch arrangement comprising a protrusion configured to contact a surface of the injection device while the supplemental device is attached to the injection device；a dose dialled detector operable to detect a dose of medicament dialled into the attached injection device； anda processor arrangement configured to:monitor the detected dose of medicament dialled into the attached injection device；detect a change in the state of the electromechanical switch arrangement； andchange a display output of the supplemental device when a change in the state of the electromechanical switch arrangement is detected while a zero dose is dialled into the attached injection device.
