Patent ID: 8647307

Claim:
A needle guard for an injection device, the needle guard comprising: a) an injection needle, b) a needle holder which is attached to or can be attached to the injection device, from which the injection needle extends in a distal injection direction, c) a lock mechanism which extends out from the needle holder and is spaced radially apart from the injection needle, d) a needle guard member arranged radially between the injection needle and the lock mechanism, which can be moved in a proximal direction opposite the distal injection direction as far as a releasing position in which the injection needle projects from the needle guard and out of the releasing position in the distal injection direction as far as a guard position in which the needle guard member surrounds the injection needle, including a needle tip, and which can be locked in the guard position by the lock mechanism to prevent another movement in the proximal direction, and g) a locking member arranged radially between the injection needle and the needle guard member and able to move relative to the injection needle from a proximal position in the distal injection direction, wherein h) the needle guard member has a locating element and the locking member has a complementary locating element, wherein the locating element and the complementary locating element move into a driving connection with one another when the needle guard member is moved into the releasing position, and the needle guard member drives the locking member in the distal injection direction by the driving connection during the movement into the guard position, and wherein i) in the guard position of the needle guard member, the locking member is arranged in a position that supports the locating element radially inwardly and prevents the needle guard member from moving out of a locked connection with the lock mechanism by blocking a radial inward movement of the locating element.