US 12,440,625 B2
Drug delivery device
Emil Finkelstein, Frederiksberg (DK); Lars Eilertsen, Søborg (DK); Michael Sorensen, Jyllinge (DK); and Tobias Maduro Norbo, Copenhagen (DK)
Assigned to AMGEN INC., Thousand Oaks, CA (US)
Filed by AMGEN INC., Thousand Oaks, CA (US)
Filed on Sep. 29, 2020, as Appl. No. 17/036,217.
Claims priority of provisional application 62/961,048, filed on Jan. 14, 2020.
Claims priority of provisional application 62/908,504, filed on Sep. 30, 2019.
Prior Publication US 2021/0093796 A1, Apr. 1, 2021
Int. Cl. A61M 5/315 (2006.01); A61M 5/20 (2006.01)
CPC A61M 5/31581 (2013.01) [A61M 5/2033 (2013.01); A61M 5/31535 (2013.01); A61M 2205/581 (2013.01)] 23 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 guard moveably positioned adjacent to the opening;
a plunger having a top ring defining a proximal end thereof, a base defining a distal end thereof, a generally cylindrical body portion extending between the top ring and the base, and at least one flange extending radially outwardly from the top ring, wherein the plunger is moveable toward a distal end of the drug storage container to expel a drug from the drug storage container through the delivery member;
a plunger biasing member configured to urge the plunger toward the distal end of the drug storage container; and
a releaser member defining at least one guide configured to receive the at least one flange and an indicator configured to generate an audible signal indicating an end of drug delivery.
 
18. 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 guard moveably positioned adjacent to the opening;
a plunger having a generally cylindrical body portion extending along the longitudinal axis and at least one flange extending radially outwardly from the body portion;
a plunger biasing member configured to urge the plunger toward a distal end of the drug storage container; and
a releaser member defining a guide configured to receive the at least one flange and an indicator configured to generate an audible signal indicating an end of drug delivery, wherein the guide extends in a proximal direction, along the longitudinal axis, from the indicator.