Patent ID: 9744308
Date: 2017-08-29
CPC Classifications: A61M

Claim:
1. A dose setting mechanism for a medicament delivery device comprising, a housing having a longitudinal axis; a locking member rotationally and slidably fixed to the housing and releasably engaged with a lead screw; a dose member arranged coaxially and slidable with respect to the lead screw such that the dose member is rotatable relative to the lead screw when the dose setting mechanism is in a non-activated state and where the dose member is slidably connected and rotatably fixed to the lead screw when the dose setting mechanism is in an activated state; the lead screw is coaxially arranged and engaged with the locking member when dose setting mechanism is in the non-activated state; a plunger rod rotationally fixed to the lead screw; a nut threadedly connected to the plunger rod and slidably locked to the lead screw; and a dose knob rotationally fixed to the dose member that is in clutched engagement with the lead screw, where the dose knob and dose member are rotationally fixed to the lead screw when the dose setting mechanism is in the activated state, and wherein the locking member is disengaged from the lead screw when the dose setting mechanism is in the activated state and the locking member is engaged with the lead screw when the dose setting mechanism is in the non-activated state.