CODED CARTRIDGE ASSEMBLY

摘要

Disclosed herein are cartridge assemblies that include coding features that help dedicate a medicament reservoir to specific injection devices. An exemplary cartridge assembly comprises a cylindrical inner surface for holding medicament and a cylindrical outer surface comprising at its proximal end one or more stops configured as coding elements protruding from the cylindrical outer surface. Each coding element is configured only to engage a corresponding coding feature on a dose setting and delivery mechanism, thereby allowing only the correct cartridge assembly to connect to the dose setting and delivery mechanism.

主权项

1. A cartridge assembly configured for connection to a dose setting and delivery mechanism, the cartridge assembly comprising:
a cylindrical body for holding a medicament reservoir, where the cylindrical body has a proximal end portion having an outer surface and an inner surface; a fastener on the outer surface of the proximal end portion, the fastener configured to attach the cartridge assembly to the dose setting and delivery mechanism through a combination of axial and rotational movements; and a fastening pin projecting radially outward from the proximal end portion configured to engage a cooperating fastening pin located on a distal inner surface of the dose setting and delivery mechanism, where the fastening pin is separate from the fastener and is configured to engage the cooperating fastening pin thereby allowing the cartridge assembly to operably connect to the dose setting and delivery mechanism.