US 11,957,870 B2
Drug delivery device
Richard A Cronenberg, Mahwah, NJ (US); Lionel Vedrine, Palo Alto, CA (US); and Paul Alchas, Franklin Lakes, NJ (US)
Assigned to Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed by Becton, Dickinson and Company, Franklin Lakes, NJ (US)
Filed on Feb. 26, 2021, as Appl. No. 17/186,653.
Application 17/186,653 is a continuation of application No. 16/573,097, filed on Sep. 17, 2019, granted, now 11,202,857.
Application 16/573,097 is a continuation of application No. 15/208,330, filed on Jul. 12, 2016, granted, now 10,478,552, issued on Nov. 19, 2019.
Application 15/208,330 is a continuation of application No. 13/698,894, granted, now 9,408,985, issued on Aug. 9, 2016, previously published as PCT/US2011/030182, filed on Mar. 28, 2011.
Claims priority of provisional application 61/346,542, filed on May 20, 2010.
Prior Publication US 2021/0178057 A1, Jun. 17, 2021
Int. Cl. A61M 5/142 (2006.01); A61M 5/145 (2006.01); A61M 5/315 (2006.01); A61M 5/32 (2006.01); A61M 5/46 (2006.01)
CPC A61M 5/14248 (2013.01) [A61M 5/1454 (2013.01); A61M 5/3157 (2013.01); A61M 5/3287 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/1426 (2013.01); A61M 5/14566 (2013.01); A61M 5/46 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/583 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A medicament delivery device, comprising:
a body having a window therein;
a reservoir disposed in the body for accommodating a medicament;
a plunger movable within the reservoir to expel medicament therefrom, the plunger having a stopper disposed at an end thereof, and an indicator window;
a spring configured to displace the plunger toward an end of the reservoir; and
an indicator sleeve disposed at an end of the stopper, wherein a first portion of the indicator sleeve initially extends through the stopper toward an end of the reservoir;
wherein during expelling of the medicament from the reservoir, the first portion of the indicator sleeve is configured to contact one of the end of the reservoir or a secondary stopper disposed at the end of the reservoir prior to the stopper contacting the one of the end of the reservoir or the secondary stopper, and during movement of the plunger by the spring subsequent to the first portion of the indicator sleeve contacting the one of the end of the reservoir or the secondary stopper, the plunger is configured to bring the indicator window into alignment with a second portion of the indicator sleeve, thereby indicating the end of dosage.