Medication delivery system with a detector for providing a signal indicative of an amount of a set and/or ejected dose of drug

摘要

A medication delivery system, comprising: a movable part (230, 232) adapted to move relative to a stationary part; at least two conductors (234, 236) which are arranged such that an electrical characteristic is defined by the mutual position of the movable and the stationary part and/or by movement of one of said parts relative to the other; and a detector for detecting a change of said electrical characteristic, wherein the parts are stationary relative to each other during dose setting and in that the parts are moved relative to each other during dose ejection, such that that detector provides a signal indicative of the actual amount of the ejected dose.