Abstract:
A method and assembly are disclosed for interfacing between a drug cartridge and a drug delivery device. Optionally, the drug delivery device includes a compartment that retains the cartridge during drug delivery and/or a stopper pushing assembly mounted to the device behind (proximal to) the compartment. In some embodiments, the cartridge may be inserted laterally into the compartment in front of the pushing assembly. For example, the delivery device may include a moving cartridge bay. The cartridge is optionally inserted into the bay and/or the bay and cartridge optionally move into the cartridge compartment. Alternatively or additionally, the cartridge compartment may have a proximal opening into which the cartridge is inserted and/or the pushing assembly may be moved into position after insertion of the cartridge. In some embodiments the cartridge may have a distal seal that is broken by a longitudinal movement.
Abstract:
A cartridge interface assembly drives a stopper in a drug reservoir or a drug delivery device. An anti-rotational guide optionally moves along an axis of a cavity of the reservoir. The anti-rotational guide is optionally slidably anti-rotationally coupled to a housing of the drug delivery device. A telescoping plunger driver may include a proximal shaft and distal shaft that telescope by relative rotation. The distal shaft is optionally slidably anti-rotationally coupled to the anti-rotational guide. The shafts are optionally oriented along said axis. In some embodiments, rotating the proximal shaft with respect to the anti-rotational guide moves the guide along said axis with respect to the housing and moves the distal shaft along the axis with respect to the anti-rotational guide.