Patent ID: 8911412
Filing Date: 2014-12-16
Classification: A61M

Abstract:
1. An interlock mechanism for restricting a rotational movement (R) of a rotatable component of a drug delivery device, the interlock mechanism comprising, a rotatable component having a cam profile, the cam profile comprising at least one catch and at least one cam; a latch arm having a protrusion configured to engage the catch, where the catch is configured to accept and hold the protrusion to prevent rotation (R) of the rotatable component; a pivotal trigger arm engageable with the protrusion of the latch arm for pivoting the latch arm out of the catch by translative movement (T) of the trigger arm thus allowing rotation (R) of the rotatable component, the trigger arm configured to engage the cam during rotation (R) causing the trigger arm to pivot and disengage from the protrusion; a resettable interlock configured to catch and hold the trigger arm once the trigger arm has been translatively moved and pivoted; and a reset configured to release the trigger arm from the interlock.