Patent ID: 8157769

Claim:
A cartridge insertion assembly in a drug delivery device comprising: an apparatus with a pathway formed therein; a cartridge insertable into said pathway, said cartridge comprising a cartridge coupling element connectable to an activation mechanism disposed in said apparatus operative to cause a substance contained in said cartridge to be metered out of said cartridge; a door pivoted to said apparatus that comprises a door coupling element arranged with respect to said cartridge such that when said door is in a fully closed position, said door coupling element couples said cartridge coupling element with a coupling element of said activation mechanism; and a locking latch cantilevered from a base of said apparatus, wherein when said cartridge is fully inserted in said apparatus, said locking latch abuts against a rim of said cartridge, thereby locking said cartridge in said pathway, and wherein said door comprises a closure member on an inside surface thereof, said closure member comprising one or more inclined ramp members, wherein closing said door causes said ramp members to slide and push against said cartridge coupling element so as to push said cartridge fully into said apparatus, said closure member further comprising a hub, wherein when said door is fully closed, said hub is fixedly received in a snap member.