Patent ID: 8449498

Claim:
An injection device for a syringe having a needle, the device comprising: a housing for receiving in use a syringe for movement with respect thereto; a needle shroud captive to a leading end of the housing and movable before use between extended and retracted positions; a drive member configured to move from a rearward position within the housing to urge the syringe and thereby move the syringe forward in the housing to project the needle beyond the needle shroud when the needle shroud is in the retracted position, and then to a forward position to express a dose through the needle; and locating members on a sidewall of the housing, said locating members configured to, upon arrival of the drive member into the forward position, capture and maintain the drive member at the forward position attained after expressing the dose, the captured drive member being prevented by said locating members from rearwardly exiting the forward position, wherein, when the drive member is captured by the locating members, a blocking portion of the drive member is positioned to stop a rearward retraction of the needle shroud from the extended position and, with the drive member captured by the locating members and stopping the needle shroud from retracting from the extended position, an entire length of the needle is shrouded by said needle shroud.