US 11,918,786 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 Sep. 3, 2020, as Appl. No. 17/011,607.
Application 17/011,607 is a continuation of application No. 16/892,047, filed on Jun. 3, 2020.
Application 16/892,047 is a continuation of application No. 15/177,948, filed on Jun. 9, 2016, granted, now 10,675,408, issued on Jun. 9, 2020.
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 2020/0397992 A1, Dec. 24, 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)] 15 Claims
OG exemplary drawing
 
1. A medicament delivery device comprising:
a housing;
a needle comprising a distal tip through which a dose of medicament is deliverable from the medicament delivery device into an injection site, wherein at least a portion of the needle extends distally out of the housing;
a sleeve assembly coupled to the housing, the sleeve assembly being adjacent to the needle, the sleeve assembly being movable during an injection process between a first position in which the sleeve assembly covers the portion of the needle extending distally out of the housing and a second position in which the needle at least partially extends distally beyond the sleeve assembly, wherein the sleeve assembly comprises a first sleeve and a second sleeve telescopically movable relative to one another;
one or more indicia on the sleeve assembly, the one or more indicia being configured to provide an indication of progress of the injection process, wherein the one or more indicia comprise a first indicia on the first sleeve and a second indicia on the second sleeve, the first indicia being different from the second indicia; and
a first biasing element configured to bias the first sleeve away from the housing; and
a second biasing element configured to bias the second sleeve away from the housing,
wherein the first biasing element and the second biasing element are configured such that a force needed to compress the first biasing element is less than a force needed to compress the second biasing element.