US 12,337,145 B2
Drive mechanism for a medicament delivery device
Stephan Müller, Hemishofen (CH)
Assigned to SHL Medical AG, Zug (CH)
Appl. No. 17/612,076
Filed by SHL MEDICAL AG, Zug (CH)
PCT Filed May 22, 2020, PCT No. PCT/EP2020/064275
§ 371(c)(1), (2) Date Nov. 17, 2021,
PCT Pub. No. WO2020/249373, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 19179659 (EP), filed on Jun. 12, 2019.
Prior Publication US 2022/0203030 A1, Jun. 30, 2022
Int. Cl. A61M 5/20 (2006.01); A61M 5/145 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/2033 (2013.01) [A61M 5/3204 (2013.01); A61M 2005/14533 (2013.01); A61M 2005/2026 (2013.01); A61M 2005/208 (2013.01); A61M 2205/103 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drive mechanism for a medicament delivery device, comprising:
a base member having a guide track structure, the guide track structure including a first track and a second track, wherein the second track has an arced portion, a first straight portion, and a second straight portion;
a rotator base member having a first guide structure configured to run in the first track;
a rotator housing coaxially arranged with and configured to engage with the rotator base member, the rotator housing having a second guide structure arranged at a fixed distance from the first guide structure and configured to run in the second track;
a rotation device configured to actuate the rotator housing; and
a medicament container carrier configured to receive a medicament container, wherein the medicament container carrier is coaxially arranged relative to the rotator base member and the rotator housing, the rotator housing being configured to rotate relative to the medicament container carrier,
wherein the first track and the second track are arranged relative to each other such that actuation of the rotator housing causes the second guide structure to move along the second track and the first guide structure to initially move in a first direction along the first track and subsequently to move in a second direction opposite to the first direction,
wherein the movement in the first direction causes initial linear movement of the medicament container carrier in the first direction,
wherein the movement in the second direction causes subsequent movement of the medicament container carrier in the second direction, and
wherein movement of the second guide structure causes rotation of the rotator housing, thereby enabling a medicament delivery.