US 12,076,534 B2
Medicament delivery device having an activating mechanism
Michael Helmer, Frankfurt am Main (DE)
Assigned to Sanofi, Paris (FR)
Filed by Sanofi, Paris (FR)
Filed on Dec. 26, 2019, as Appl. No. 16/727,609.
Application 16/727,609 is a continuation of application No. 15/309,717, granted, now 10,518,032, previously published as PCT/EP2015/060288, filed on May 11, 2015.
Claims priority of application No. 14305685 (EP), filed on May 12, 2014.
Prior Publication US 2020/0129697 A1, Apr. 30, 2020
Int. Cl. A61M 5/20 (2006.01); A61M 5/24 (2006.01); A61M 5/32 (2006.01); A61M 5/34 (2006.01)
CPC A61M 5/2033 (2013.01) [A61M 5/2466 (2013.01); A61M 5/3202 (2013.01); A61M 5/347 (2013.01); A61M 2005/2013 (2013.01); A61M 2005/2026 (2013.01); A61M 2005/247 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A medicament delivery device comprising:
a housing;
a medicament cartridge contained in the housing such that (i) a distal end of the housing is distal to a distal end of the medicament cartridge, (ii) a proximal end of the housing is proximal to a proximal end of the medicament cartridge, and (iii) the housing extends an entire length of the medicament cartridge, the proximal end of the medicament cartridge defining a proximal opening, the distal end of the medicament cartridge defining a distal opening, and a sealing element covering the distal opening;
a hollow needle attached to a needle holder within the housing, the hollow needle having a proximal end and a distal end, the proximal end of the hollow needle, in an initial position, being distally spaced from the sealing element covering the distal opening of the medicament cartridge such that the hollow needle is not in fluid communication with medicament in the medicament cartridge;
a member disposed within the housing, the member comprising (i) a sidewall extending substantially parallel to a sidewall of the housing and (ii) a distal portion extending inward towards a longitudinal axis of the housing;
a piston drive member configured to be advanced within the medicament cartridge;
a piston disposed within the medicament cartridge and configured to seal the proximal end of the medicament cartridge; and
a removable needle cover configured to be secured with respect to the housing, the removable needle cover, when secured with respect to the housing, having a first portion that protrudes from the housing and a second portion that is slidably engaged with the member,
wherein the removable needle cover is configured such that removal of the removable needle cover from the housing causes the second portion of the removable needle cover to disengage from the member thereby permitting the member to be moved relative to the medicament cartridge to place the hollow needle in fluid communication with the medicament in the medicament cartridge.