DRIVE SLEEVE, DRUG DELIVERY DEVICE AND METHOD FOR ASSEMBLING A DRUG DELIVERY DEVICE

摘要

The present invention is directed to a drive sleeve (40) with a hollow body having a ring of crown teeth (42) with a first outer diameter forming a clutch interface at a first end and a thread (41) extending on an outer surface of the body. The thread (41) has a major diameter and a minor diameter, wherein the ring of crown teeth (42) has at least two cavities (43) extending on the outer surface of the body from the first end to the thread (41) and defining a second outer diameter which is smaller than the major diameter of the thread. Further, the invention is directed to a drug delivery device with such a drive sleeve (40) and a method for assembling a drug delivery device