Needle Shield Mechanism and a Medicament Delivery Device Comprising the Needle Shield Mechanism

A needle shield mechanism for an auto-injector, which needle shield mechanism comprises,

• a longitudinally elongated, generally tubular housing having a forward end and a rear end,
• a generally tubular needle shield movably arranged in the housing between a retracted state an extended position.
• a releasable spring-biased container carrier assembly for accommodating a medicament container,
• wherein the container carrier assembly is movably arranged in the housing and is movable relative to the housing from an initial position to a penetrating position, and is also movable relative to the needle shield,
• wherein the container carrier assembly prevents the needle shield from moving to the extended position when the container carrier assembly is in the initial position, and
• wherein the container carrier assembly allows the needle shield to move to the extended position when the container carrier assembly is in the penetrating position, and
• wherein the needle shield is spring-biased and comprises a deflectable locking element, which deflectable locking element is radially deflectable, and
• wherein the container carrier assembly prevents the deflectable locking element from deflecting radially when the container carrier assembly is in the initial position and the needle shield is in the retracted state.