Patent ID: 11865317
Assignee: SHL MEDICAL AG
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 12:
13. A drive mechanism for a medicament delivery device, the drive mechanism comprising:
a housing having a proximal end and a distal end;
a drive assembly rotatably fixed relative to the housing and axially movably within and relative to the housing, where the drive assembly comprises a plunger holder and a proximally extended rack arm;
a container carrier configured to engage and hold a container of medicament, where movement of the rack causes axial movement of the container carrier relative to the housing; and
a cogwheel engaged with the container carrier and being rotatable but axially fixed relative to the housing, where the cogwheel comprises a plurality of cogs configured to engage a first set of rack teeth on the rack arm and then subsequently a second set of rack teeth on the rack arm as the rack arm moves proximally relative to the housing,
wherein the proximal movement of the rack arm causes the cogwheel to rotate which causes the container carrier to first move proximally and then move distally.