Patent ID: 9421335
Filing Date: 2016-08-23
CPC Classification: A61M

Claim Text:
1. A drive mechanism for a drug delivery device, comprising: a body having a proximal end and a distal end, a dose member having a screw thread, a drive sleeve arranged within the body and being rotatable with respect to the body, the drive sleeve having a screw thread engaging the screw thread of the dose member, stop means comprising webs or interfaces of the body that restrict or inhibit a movement of the drive sleeve in the proximal direction and in the distal direction with respect to the body, and a clutch being provided to lock the dose member rotationally to the body in a releasable manner when a force is exerted on the dose member in the distal direction, the clutch permitting a movement of the dose member in the distal direction and a rotation of the drive sleeve with respect to the body.