Patent · US Active

Piston rod assembly for a drug delivery device

US8986259B2 · kind B2 · utility

2Cited by

9References

17Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Michael Helmer · Frankfurt am Main, DE
Christoph Eissengarthen · Nackenheim, DE
Winfried Huthmacher · Frankfurt am Main, DE
Carsten Mosebach · Frankfurt am Main, DE
Leo Zeimetz · Lennestadt, DE

Key dates

Filing date	Jun 1, 2010
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Jul 26, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49826
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.