US 12,311,151 B2
Drug delivery device
Emil Finkelstein, Frederiksberg (DK); Soren Forbech Skall, Søborg (DK); Lars Eilertsen, Søborg (DK); Matias Melander, Copenhagen (DK); and Jan Jensen, Copenhagen (DK)
Assigned to AMGEN INC., Thousand Oaks, CA (US)
Filed by AMGEN INC., Thousand Oaks, CA (US)
Filed on Dec. 8, 2023, as Appl. No. 18/534,155.
Application 18/534,155 is a continuation of application No. 17/036,129, filed on Sep. 29, 2020, granted, now 11,878,149.
Claims priority of provisional application 62/961,031, filed on Jan. 14, 2020.
Claims priority of provisional application 62/908,504, filed on Sep. 30, 2019.
Prior Publication US 2024/0100258 A1, Mar. 28, 2024
Int. Cl. A61M 5/315 (2006.01); A61M 5/20 (2006.01); A61M 5/31 (2006.01); A61M 5/32 (2006.01)
CPC A61M 5/31536 (2013.01) [A61M 5/20 (2013.01); A61M 5/3137 (2013.01); A61M 5/3157 (2013.01); A61M 5/3204 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A drug delivery device comprising:
a housing defining a longitudinal axis and having an opening;
a drug storage container including a delivery member having an insertion end configured to extend at least partially through the opening during a delivery state;
a plunger moveable toward a distal end of the drug storage container to expel a drug from the drug storage container through the delivery member, the plunger including a top portion at a proximal end, a base at a distal end, and a body portion connecting the top portion and the base, wherein the body portion has an inner wall defining an axial chamber and an outer wall cooperating with the inner wall to define a body thickness less than 2 millimeters; and
a plunger biasing member disposed at least partially within the axial chamber, the plunger biasing member being configured to urge the plunger toward the distal end of the drug storage container, wherein the base of the plunger is configured to support a distal end of the plunger biasing member.