A MEDICATION DELIVERY DEVICE AND A CARTRIDGE ASSEMBLY FOR USE IN THE SAME

摘要

The present invention relates to a medication delivery device comprising a cartridge assembly, a dosing assembly and optionally a needle assembly. The cartridge assembly comprises a cartridge having a stopper adapted to receive a plunger means. Furthermore, the cartridge assembly has one end sealed with a pierceable sealing, said end comprising coupling means for engaging a needle assembly, and another end comprising coupling means for engaging the dosing assembly. The dosing assembly comprises a plunger means and has coupling mea ns for engaging the cartridge assembly. The cartridge assembly and the dosing assembly are coupled together for delivering selected doses of medication. T he device further comprises means for securing that the plunger means abuts on the stopper during use of the device, in particular when the dosing assembly is releasably coupled to the cartridge assembly. The securing means is preferably a means for preventing the cartridge assembly from being inadvertently released from the dosing assembly. The cartridge is preferably moulded from a plastic material, such as a transparent material, and may be housed in a cartridge housing protection of the cartridge. The medication delivery device is especially suitable for delivering insulin, growth hormon e or the like medicines.