IMPROVEMENTS IN AND RELATING TO A MEDICAMENT CARTRIDGE

摘要

Many of those having diabetes take a combination of slow and fast acting typ es of insulin. It is important that the different forms of medicament do not become confused. To this end, a medicament cartridge is provided comprising a sleeve (2) having a bottleneck providing a flange (14) at a first end, a flu id impermeable membrane (12) secured across the first end by a metal cap (6) beaded beneath the flange (14), and a displaceable piston (10) located internally of the sleeve (2) towards a second end of the sleeve (2), a colla r (8) located against an external periphery of the cartridge housing beneath t he flange (2) and an adaptor top (4) press fit over the cap (6) and the collar (8), the adaptor top (4) being provided with means to act upon the collar (8 ) thereby to retain the adaptor top (4) on the sleeve (2).