Patent ID: 8267903

Claim:
A needle free injector, comprising a cartridge containing a medicament for injection and having an orifice at one end thereof a drive mechanism for driving the medicament out of the cartridge via an exit orifice and through skin of a patient; a trigger mechanism which on actuation releases the drive mechanism; a safety mechanism, which in a first configuration prevents the drive mechanism from being actuated and in a second configuration allows the drive mechanism to be actuated; wherein the safety mechanism operates by obstructing movement of a moveable trigger component; and further comprising: a first casing part; and a second casing part; wherein the second casing part comprises a removable end cap which closes a nozzle orifice prior to removal of the removable end cap; wherein the needle-free injector is configured such that the drive mechanism cannot be operated before the second casing part has been removed from an end opening of the first casing part.