Product e.g. insulin, injecting device, has housing and operating knob with locking units that are formed such that movement of operating knob in one direction has smaller resistance in contrast to movement in other direction

摘要

The device has housing sections (1-3) with a reservoir (R), and an operating knob (27) movable relative to the sections in dosing and adjusting directions to adjust product dose. The housing section (3) and knob have a locking unit and a counter locking unit that are formed such that the movement of the knob in one of the directions has a smaller resistance in contrast to the movement in other direction. A spring unit (32) e.g. pressure spring and torsion spring, is coupled with a piston (10).