US 12,102,808 B2
Drug delivery device
Christian Plambech, Soeborg (DK); Matias Melander, Copenhagen (DK); Bjarke Lykke Ludvig Svendsen, Slagelse (DK); Joshua Jay Dudman, Copenhagen (DK); Michael Sorensen, Jyllinge (DK); Margaux Frances Boyaval, Newbury Park, CA (US); and Avon Kuo, San Jose, CA (US)
Assigned to AMGEN INC., Thousand Oaks, CA (US)
Filed by AMGEN INC., Thousand Oaks, CA (US)
Filed on Sep. 29, 2020, as Appl. No. 17/036,556.
Claims priority of provisional application 62/975,557, filed on Feb. 12, 2020.
Claims priority of provisional application 62/908,472, filed on Sep. 30, 2019.
Prior Publication US 2021/0093789 A1, Apr. 1, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/20 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/3157 (2013.01) [A61M 5/2033 (2013.01); A61M 5/3204 (2013.01); A61M 2205/581 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A drug delivery device comprising:
a housing having an opening;
a drug storage container including a delivery member having an insertion end configured to extend at least partially through the opening in the housing;
a plunger;
a drive mechanism activatable to drive the plunger in a distal direction to expel a drug from the drug storage container through the delivery member;
a guard moveably disposed adjacent to the opening and operably coupled to the drive mechanism, wherein moving the guard in a proximal direction relative to the housing causes the guard to directly or indirectly activate the drive mechanism;
a lock disposed at least partially within the guard and rotatable between a first rotational position wherein the lock permits movement of the guard in the proximal direction and a second rotational position wherein the lock limits movement of the guard in the proximal direction; and
a spring configured to exert a proximally directed biasing force on the lock.