US 12,102,806 B2
Actuation mechanism
Natalia Chuvashova, Nacka (SE); and Anders Holmqvist, Värmdö (SE)
Assigned to SHL MEDICAL AG, Zug (CH)
Filed by SHL Medical AG, Zug (CH)
Filed on Apr. 5, 2022, as Appl. No. 17/658,020.
Application 17/658,020 is a continuation of application No. 16/301,341, granted, now 11,331,435, previously published as PCT/EP2017/060966, filed on May 9, 2017.
Prior Publication US 2022/0233780 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/00 (2006.01); A61M 5/315 (2006.01)
CPC A61M 5/31556 (2013.01) [A61M 5/31505 (2013.01); A61M 5/31541 (2013.01); A61M 5/3155 (2013.01); A61M 5/31565 (2013.01); A61M 5/3158 (2013.01); A61M 5/31581 (2013.01); A61M 5/31593 (2013.01); A61M 5/31585 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An actuation mechanism for use in a medicament delivery device, the actuation mechanism comprising:
a plunger rod;
an actuator slidably connected to the plunger rod that engages a stopper of a medicament container of the medicament delivery device when the actuator is operated by displacing the stopper in a longitudinal direction of the actuation mechanism;
an activator rotatably arranged for activating the actuation mechanism and for setting a medicament dose, wherein the activator comprises a generally tubular activator sleeve, wherein the activator sleeve is arranged rotationally inside a generally tubular distal housing part of the medicament delivery device, wherein the activator sleeve includes protrusions arranged to interact with the actuator such that the activator sleeve is rotated when the actuator is operated, wherein the actuator is arranged with a plurality of inclined ledges cooperating with the protrusions, and wherein the plurality of inclined ledges are arranged inclined in varying angles of inclination in relation to the longitudinal direction; and
a stop ring arranged coaxial with the activator sleeve and comprising an inwardly protruding ledge.