US 11,938,304 B2
Impact testing apparatuses and methods for drug delivery devices
Julian Jazayeri, Woodland Hills, CA (US); Sean Fitzgibbon, Camarillo, CA (US); Joshua Tamsky, Thousand Oaks, CA (US); and Christopher R. Folk, San Diego, CA (US)
Assigned to AMGEN INC., Thousand Oaks, CA (US)
Filed by AMGEN INC., Thousand Oaks, CA (US)
Filed on Nov. 30, 2022, as Appl. No. 18/071,861.
Application 18/071,861 is a continuation of application No. 16/306,379, granted, now 11,541,176, previously published as PCT/US2017/031544, filed on May 8, 2017.
Claims priority of provisional application 62/345,608, filed on Jun. 3, 2016.
Prior Publication US 2023/0105242 A1, Apr. 6, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/20 (2006.01); A61M 5/142 (2006.01); G01L 5/00 (2006.01)
CPC A61M 5/2033 (2013.01) [G01L 5/0052 (2013.01); A61M 2005/14288 (2013.01); A61M 2205/332 (2013.01); A61M 2205/3331 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of impact testing a syringe having a barrel containing a fluid and a plunger, the plunger having a distally facing end surface and a proximally facing end surface each being disposed within the barrel of the syringe, the method comprising:
inserting the syringe into a guide sleeve;
activating an energy source to cause an impactor to strike the proximally facing end surface of the plunger; and
measuring at least one characteristic of at least one impact caused by the impactor.