Patent ID: 11872379
Assignee: MEDMIX SWITZERLAND AG
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A drug delivery device, comprising:
a housing configured to connect to a dispensing unit, the dispensing unit comprising a compartment containing a fluid;
a piston rod configured to move in a proximal direction for ejecting the fluid; and
a dosing mechanism,
the dosing mechanism comprising an actuation member to be actuated by a user to advance the piston rod and to thereby eject a set dose out of the compartment and
a conversion mechanism configured to convert movement of the actuation member to movement of the piston rod,
the conversion mechanism comprising a dose selector member rotationally fixed to the housing and axially movable with respect to the housing, and a dosing member rotationally movable with respect to the dose selector member,
the dose selector member disposed between the actuation member and the dosing member, the drug delivery device comprising a friction reduction mechanism disposed between the dose selector member and the dosing member to reduce friction between the dose selector member and the dosing member upon relative rotational movement with respect to each other.