| 摘要 |
A drug delivery device comprises a lead screw having a longitudinal axis, a distal end and a proximal end that is axially movable in a distal direction relative to a mid-body, the lead screw including a threaded shaft, wherein the lead screw has a keyway positioned parallel to the longitudinal axis and containing a first section of a dose dispensing feedback component; the mid-body being designed to prevent rotation of the lead screw with respect to the mid-body, where the mid-body contains a second section of the dose dispensing feedback component. |
