Injector Device with Distraction Mechanism

This disclosure relates to features of an injection device arranged to provide a sensory distraction to a user during insertion of a needle into flesh. According to a first aspect, an injector device includes a housing having a proximal end and a distal end, and configured to receive a container of medicament, a needle housing for holding a needle in a position at the distal end of the housing, and a needle sleeve mounted within the housing, wherein the needle sleeve and needle housing are moveable relative to one another by a user action between a first configuration in which the needle sleeve would enclose a needle, and a second configuration in which a needle would extend from the needle sleeve in the distal direction, wherein the needle sleeve comprises a portion configured to vibrate and/or rotate during motion between the first configuration and the second configuration.