Sanofi-a Ventis Deutschland Gmbh

Christoph Eissengarthen

Michael Helmer

Winfried Huthmacher

Carsten Mosebach

Christian Nessel

Leo Zeimetz

Christian Dexheimer

Stephan Müller-Pathle

Navid Durrani

A drug delivery device () is provided comprising a housing () comprising a distal end and a proximal end and a cartridge () adapted and arranged to contain at least one dose of a drug (), a bung () being movably arranged within the cartridge (). In an initial state of the device (), the bung () is arranged in a proximal end position with respect to the cartridge (). The device () further comprises a piston rod () adapted and arranged to move the bung () in the distal direction with respect to the cartridge () for delivering a dose of the drug (). The device () further comprises a mechanism operable such that, after a dose delivery operation was completed, the piston rod () is moved into the proximal direction with respect to the bung () by a back off distance (D), wherein in the initial state, a distance between a distal end of the piston rod () and a proximal end of the bung () is greater than zero, with the distance between the piston rod () and the bung () in the initial state being defined by the back off distance (D). Furthermore, a method for assembling a drug delivery device () is provided.

Drug delivery device and method for a drug delivery device

An assembly for a drug delivery device is provided, the assembly including a blocking element and a piston rod having an interaction feature adapted and arranged to mechanically cooperate with the blocking element. For delivering a dose of a drug, the piston rod is configured to be moved from an initial position to an end position with respect to the blocking element, wherein the interaction feature is provided along the path between the initial position and the end position. An operating noise is provided to the user when the interaction feature mechanically cooperates with the blocking element while moving the piston rod for dose delivery. The interaction feature is adapted for homogenizing the operating noise so as to prevent the operating noise from being interpreted by the user as signalling the end of the dose delivery operation. Furthermore, a drug delivery device is provided.

Assembly for a drug delivery device and drug delivery device

Various embodiments of piston rod assemblies, drug delivery devices making use of such piston rod assemblies, and methods for assembling such piston rod assemblies and drug delivery devices are provided. In one embodiment, a piston rod assembly for a drug delivery device is provided, wherein the piston rod assembly is configured to engage a piston of a medicament cartridge. The piston rod assembly comprises (i) a piston rod, (ii) at least one adjusting member displaceably engaged with a distal end section of the piston rod, wherein the at least one adjusting member is displaceable along a long axis of the piston rod, and (iii) at least one interlock member configured to mutually lock the at least one adjusting member and the piston rod in an arbitrary relative axial position.

Piston rod assembly for a drug delivery device

In order to improve the energy efficiency of an injection device, a current is caused to be applied to a motorof the injection device, which is related to a signal from a force sensor. The signal represents a force that is applied by the motorto a plungerof a cartridge

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Ginsheim, Germany

Christoph Eissengarthen