|
1. A medicament delivery device for delivery of medicament from a cartridge into an injection site through a cannula, the cartridge comprising a first chamber having an outlet, and a sealing element for closing the outlet, the device comprising: a housing for receiving the cartridge; a drive mechanism comprising a drive element that is moveable with respect to the housing in a forward direction along a drive axis to expel the medicament from the device upon activation of the drive mechanism; and a connection arrangement comprising a hub and a spring for driving relative movement between the hub and the cartridge upon operation of an operating member of the device so as to switch the connection arrangement from an unconnected configuration in which the outlet is closed to a connected configuration in which the hub cooperates with the cartridge to open the outlet, thereby to establish a connection for fluid flow between the first chamber and the cannula, wherein the operating member comprises a shield for shielding the cannula, wherein the shield is moveable to expose the cannula, and wherein movement of the shield to expose the cannula releases the hub to move axially along a longitudinal axis of the medicament delivery device into the connected configuration.
|
