Medicament delivery devices

An injection device for delivery of a medicament from a container having an outlet at a distal end of the container and a stopper for containing the medicament in the container, the device comprising:

• a housing for receiving the container;
• a drive mechanism arranged to move a drive element in a distal direction to cooperate with the container upon operation of the drive mechanism;
• an interlock component received in the housing and arranged for movement with respect to the housing from a first position to a second position to switch the drive mechanism from a locked state to an operating state;
• and
• a securing mechanism for securing the interlock component in the first position, wherein the securing mechanism is releasable upon movement of an operating member of the device to allow movement of the interlock component to the second position,
• wherein movement of the operating member causes turning movement of the interlock component relative to the housing thereby to release the securing mechanism.

A device for delivery of a medicament from a container having an outlet at a distal end of the container and a stopper for containing the medicament in the container, the device comprising:

• a housing;
• a plunger arranged to move in a distal direction to cooperate with the container;
• a drive mechanism comprising a trigger button, the drive mechanism being arranged to hold the plunger in a starting position and to move the plunger in the distal direction from the starting position upon displacement of the trigger button from a working position to a firing position;
• an interlock component received in the housing and arranged for movement with respect to the housing from a first position to a second position;
• and
• at least one flexible locking member arranged to cooperate with a stop face associated with the housing to prevent displacement of the trigger button to the firing position when the interlock component is in the first position,
• wherein the at least one flexible locking member is located on the interlock component and comprises a blocking face arranged to block distal movement of the trigger button when the flexible locking member cooperates with the stop face,
• wherein movement of the interlock component towards the second position causes bending of the flexible locking member away from the stop face to allow displacement of the trigger button to the firing position, and
• wherein the at least one flexible locking member further comprises a proximal end face abutting the trigger button to block distal movement of the trigger button when the flexible locking member cooperates with the proximal end face.