Patent ID: 7175055

Claim:
An injection device from which doses can be apportioned from a medicament containing cartridge wherein the injection device comprises a cartridge holder ( 2 ); an axial element ( 17 ) provided at the first end of the cartridge holder ( 2 ); an inward protrusion ( 18 ) perpendicular to the axial element ( 17 ), the protrusion forming the closure of the cartridge holder being moveable in a radial direction relative to the cartridge holder ( 2 ), being biased to be deflected outwardly; a ring ( 3 ) mounted on the device and being rotatable between a first position and a second position, the ring having pins ( 10 ) extending through slots ( 11 ) in the cartridge holder ( 2 ) and into tracks ( 16 ) in a tubular element ( 12 ) on which the axial element ( 17 ) are arranged, the tracks ( 16 ) being helical so that the tubular element ( 12 ) is displaced in an axial direction when the ring ( 3 ) is rotated from the first position to the second position and whereby the axial element ( 17 ) when moved axially out of the cartridge holder ( 2 ) is deflected outwardly.