How can I remove the vital injector syringe after emptying drug?

Q. How can I remove the vital injector syringe after emptying drug?

A. If you use up drug, the injector monitor shows the message “The syringe is empty.”
and the device will be on the Standby mode. Then you press the retreat button to retreat
the position holder, release the syringe from the holder and remove the syringe.
The used multi-needles should be disposed.