Patent ID: 8864718

Claim:
An auto injector comprising: a housing for accomodation of: a container with at least one compartment for accommodation of a medicament to be injected, a needle mounting site for user mounting of a needle covered by a removable needle cap, a needle shield that is accommodated in the housing and that is movable along a longitudinal axis of the housing with relation to a fixed part of the housing, a needle shield driver that is anchored to the fixed part of the housing and connected to the needle shield for displacing the needle shield along the longitudinal axis of the housing with relation to the fixed part of the housing, and a needle shield locking mechanism that keeps the needle shield in a retracted position before mounting of the needle wherein the needle shield locking mechanism is released during mounting of the needle with the needle cap to the needle mounting site whereby the needle shield driver, upon release of the needle shield locking mechanism and concurrently with user removal of the needle cap from the needle, displaces the needle shield from its retracted position to a first protruded position in which the needle shield prevents inadvertent user contact with the needle.