US 12,403,258 B2
Medicament delivery device and actuation mechanism for a drug delivery device
Stephan Riedel, Frankfurt (DE)
Assigned to Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed by Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed on Jun. 3, 2020, as Appl. No. 16/892,047.
Application 16/892,047 is a continuation of application No. 15/177,948, filed on Jun. 9, 2016, granted, now 10,675,408.
Application 15/177,948 is a continuation of application No. 14/346,228, granted, now 9,364,617, issued on Jun. 14, 2016, previously published as PCT/EP2012/068572, filed on Sep. 20, 2012.
Claims priority of application No. 11182632 (EP), filed on Sep. 23, 2011.
Prior Publication US 2020/0306449 A1, Oct. 1, 2020
Int. Cl. A61M 5/20 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/20 (2013.01) [A61M 5/321 (2013.01); A61M 5/3257 (2013.01); A61M 2005/2013 (2013.01); A61M 2005/3247 (2013.01); A61M 2005/3267 (2013.01); A61M 2205/6081 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A medicament delivery device comprising:
a housing;
an outer sleeve positioned at least partially within the housing and configured to telescopically and distally extend from the housing, the outer sleeve being movable proximally into the housing; and
an inner sleeve positioned at least partially within the outer sleeve and configured to telescopically and distally extend from the outer sleeve,
wherein, in a pre-injection state of the medicament delivery device, the inner sleeve is movable proximally into the outer sleeve to place the medicament delivery device in an injection state in which the inner sleeve and the outer sleeve extends distally from the housing and a needle extends distally from the inner sleeve and the outer sleeve,
wherein, the medicament delivery device further comprises a locking mechanism,
wherein the locking mechanism comprises at least one first locking element of the outer sleeve and at least one second locking element of the housing, the at least one first locking element being adapted to engage with the at least one second locking element,
wherein in the pre-injection state, the inner sleeve is axially translatable relative to the outer sleeve, and the outer sleeve is locked relative to the housing by the locking mechanism, and wherein in a third state the inner sleeve covers a distal tip of the needle and the inner sleeve is locked relative to the outer sleeve and the outer sleeve is locked relative to the housing of the medicament delivery device.