US 11,878,158 B2
Prefilled disposable injection device
Peter A. Basile, Bloomsbury, NJ (US); Steven Carl Persak, Basking Ridge, NJ (US); Mikhail Gotliboym, Scotch Plains, NJ (US); Brad Britland, Lake Hopatcong, NJ (US); Stephen G. Miggels, Wyckoff, NJ (US); Henry J. Mack, Phillipsburg, NJ (US); and Oliver J. Sha, Randolph, NJ (US)
Assigned to Merck Sharp & Dohme LLC, Rahway, NJ (US)
Filed by Merck Sharp & Dohme LLC, Rahway, NJ (US)
Filed on Sep. 16, 2021, as Appl. No. 17/476,853.
Application 17/476,853 is a division of application No. 16/069,331, granted, now 11,123,499, previously published as PCT/US2017/013278, filed on Jan. 13, 2017.
Claims priority of provisional application 62/280,214, filed on Jan. 19, 2016.
Prior Publication US 2022/0001116 A1, Jan. 6, 2022
Int. Cl. A61M 5/50 (2006.01); A61M 5/31 (2006.01); A61M 5/00 (2006.01); A61M 5/315 (2006.01); A61M 5/32 (2006.01); A61M 5/178 (2006.01); A61M 5/24 (2006.01)
CPC A61M 5/50 (2013.01) [A61M 5/00 (2013.01); A61M 5/178 (2013.01); A61M 5/24 (2013.01); A61M 5/2425 (2013.01); A61M 5/31 (2013.01); A61M 5/315 (2013.01); A61M 5/3129 (2013.01); A61M 5/3146 (2013.01); A61M 5/31511 (2013.01); A61M 5/32 (2013.01); A61M 5/326 (2013.01); A61M 5/3271 (2013.01); A61M 2005/2407 (2013.01); A61M 2005/2433 (2013.01); A61M 2205/273 (2013.01); A61M 2207/00 (2013.01)] 6 Claims
OG exemplary drawing
1. A drug delivery device comprising:
a drug container comprising at least one bellow, wherein each and every bellow of the at least one bellow comprises a first surface and an opposing second surface, wherein the first surface is comprised of a first Belleville spring and the opposing second surface is comprised of a second Belleville spring, wherein the second Belleville spring has a higher spring rate than the first Belleville spring; or a drug container extending between a distal end and a proximal end, and comprises a continuous change in cross section from the proximal end to the distal end;
a needle, wherein the needle is in liquid communication with the drug container;
a plunger wherein the plunger extends between a proximal end and a distal end, and wherein the plunger has a cam follower, and wherein the plunger is in communication with the drug container where upon axial movement of the plunger, the drug container is compressed;
a main body extending between a proximal end and a distal end and comprising an inner body and an outer body, wherein the inner body houses the plunger and the drug container and the outer body is capable of sliding over the inner body and extending past the needle, and wherein in the outer body comprises a cam track, wherein the cam follower on the plunger is capable of traveling along the cam track on the outer body; and
a spring located between the inner body and the outer body for urging the outer body to slide over the inner body and extend past the needle.