US 12,343,513 B2
End-of-dose detection for drug delivery system
David E. Booth, Frederick, MD (US); and Michael Vincent Quinn, East Hanover, NJ (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed on Jun. 27, 2022, as Appl. No. 17/850,428.
Application 17/850,428 is a continuation of application No. 16/160,153, filed on Oct. 15, 2018, granted, now 11,439,767.
Claims priority of provisional application 62/572,722, filed on Oct. 16, 2017.
Prior Publication US 2022/0323682 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/315 (2006.01); A61M 5/142 (2006.01); A61M 5/20 (2006.01); A61M 5/24 (2006.01); A61M 5/50 (2006.01); A61M 5/31 (2006.01)
CPC A61M 5/3157 (2013.01) [A61M 5/14248 (2013.01); A61M 5/2033 (2013.01); A61M 5/2459 (2013.01); A61M 5/31571 (2013.01); A61M 5/5086 (2013.01); A61M 2005/14256 (2013.01); A61M 2005/206 (2013.01); A61M 2005/3128 (2013.01); A61M 5/3158 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A drug delivery system for injecting a medicament, the system comprising:
a container configured to deliver a medicament;
a drive assembly which, upon actuation, is configured to expel the medicament from the container;
a needle for injecting the medicament to a patient;
a needle actuator assembly comprising a movable portion biased by a biasing member and configured to move the needle between a pre-use position, a use position for delivery of the medicament to the patient, and a post-use position after delivery of the medicament is completed; and
a tube in fluid communication with the container and the needle, the tube comprising an expandable portion having a radially expanded state and a non-expanded state, wherein the expandable portion is configured to be in the radially expanded state upon actuation of the drive assembly and a non-expanded state when the needle is in the post-use position;
wherein the expandable portion comprises a balloon in the tube that inflates into the radially expanded state upon actuation of the drive assembly.