Injecteur de médicament du type stylo avec dispositif électronique supplémentaire de surveillance pour la surveillance du fonctionnement de l'injecteur
Pen-type drug injection device (1) and attachable electronic add-on monitoring module (2) for monitoring and logging dose setting and administration, the module comprising a rotatably supported cylindrical member (101), wherein an outer surface of the cylindrical member is provided with at least one track, each track comprising conductive segments and non-conductive segments；at least one pair of contacts, each pair of contacts configured to engage a respective one of the at least one tracks； and an engaging part (110) configured to couple the cylindrical member to a rotatable part (19) of an attached injection device such that rotation of the rotatable part causes rotation of the cylindrical member.
