The present invention relates to a control mechanism for controlling a rod (210) having at least one key, the control mechanism comprising a handle comprising a sliding ring (131), a sliding shaft (132) and a drive shaft (133), each extending along a longitudinal axis (101) and comprising a central opening； and a friction reduction cannula (110) comprising an opening configured to receive the rod (210). The present invention also relates to a steerable device and a steerable system comprising the control mechanism according to the invention.
