Patent ID: 8926558
Filing Date: 2015-01-06
Classification: A61M

Abstract:
1. A medicament delivery device, comprising: a generally elongated housing having opposite distal and proximal ends; a medicament container holder rotatably locked but slidably connected to the housing, the medicament holder having a first mix engagement mechanism on its outer surface and a second linear guide mechanism; a multi-chamber medicament container having at least two substances arranged within the container holder; a plunger rod having a proximal end arranged to act on a distal stopper arranged inside the container, and a first holding mechanism on its outer circumferential surface; a drive force mechanism extending along a longitudinal axis of the plunger rod and being in contact with the plunger rod, configured for pushing the plunger rod for acting on the distal stopper; and a manual mixing mechanism having a rotatable manual knob protruding from the distal end of the housing, and a mix member having a flexible holding mechanism releasably engaged to the first holding mechanism for holding the plunger rod and thereby the drive force mechanism in a pre-tensioned state, and a second mix engagement mechanism arranged to cooperate with the first mix engagement mechanism for linearly and distally displacing the container holder into the housing when the manual knob is rotated, such that distal displacement of the container holder causes distal displacement of the container in relation to the plunger rod, whereby the plunger rod forces the distal stopper to be proximally displaced and thereby mixes the at least two substances.