US 12,377,218 B2
Medicament delivery device
Michael Schabbach, Frankfurt am Main (DE); Beate Franke, Frankfurt am Main (DE); Giuliano Pradel, Besana in Brianza (IT); Ilario Melzi, Milan (IT); Stefan Verlaak, Paderno d'Adda (IT); and Andrew Nelson, Dallas, TX (US)
Assigned to Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed by Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed on Apr. 25, 2023, as Appl. No. 18/306,528.
Application 18/306,528 is a continuation of application No. 16/336,266, granted, now 11,666,705, previously published as PCT/EP2017/073722, filed on Sep. 20, 2017.
Claims priority of application No. 16190881 (EP), filed on Sep. 27, 2016.
Prior Publication US 2023/0256170 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 5/20 (2006.01); A61M 5/142 (2006.01); A61M 5/148 (2006.01); A61M 5/28 (2006.01); A61M 5/32 (2006.01); A61M 5/145 (2006.01); A61M 5/315 (2006.01)
CPC A61M 5/2033 (2013.01) [A61M 5/14248 (2013.01); A61M 5/148 (2013.01); A61M 5/282 (2013.01); A61M 5/283 (2013.01); A61M 5/322 (2013.01); A61M 2005/14256 (2013.01); A61M 2005/14272 (2013.01); A61M 2005/14506 (2013.01); A61M 2005/2073 (2013.01); A61M 2005/31518 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A medicament delivery device comprising:
a housing;
a reservoir for medicament disposed in the housing, the reservoir comprising a collapsible container;
a dispensing member that is moveable relative to the housing from a first position to a second position to dispense medicament from the reservoir when the reservoir contains medicament;
a needle extension biasing member;
a first biasing member configured to urge the dispensing member from the first position to an intermediate position; and
a second biasing member configured to urge the dispensing member from the intermediate position to the second position;
wherein a needle is moveable under the force of the needle extension biasing member from a retracted position, in which the needle is fully disposed within the housing, to an extended position, in which the needle projects from the housing.
 
18. A method of dispensing medicament from a medicament delivery device that has a housing, a reservoir comprising a collapsible container disposed in the housing, a dispensing member, a needle, a needle extension biasing member, and first and second biasing members, the method comprising:
moving the needle under the force of the needle extension biasing member from a retracted position, in which the needle is fully disposed within the housing, to an extended position, in which the needle projects from the housing,
releasing the first biasing member to exert a force on the dispensing member to move the dispensing member from a first position to an intermediate position; and, then,
releasing the second biasing member to exert a force on the dispensing member to move the dispensing member from the intermediate position to a second position to dispel medicament from the reservoir.