Patent · US Active

Drive assembly for a drug delivery device and drug delivery device

US9022993B2 · kind B2 · utility

21Cited by

1References

15Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Uwe Dasbach · Frankfurt am Main, DE
Steffen Raab · Frankfurt am Main, DE
Marianne Rottluff · Frankfurt am Main, DE

Key dates

Filing date	Dec 6, 2010
Grant date	May 5, 2015
Priority date	—
Expiry date	Mar 31, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2005/3126
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A drive assembly for a drug delivery device is presented having a housing with a proximal end and a distal end, a drive member, and a piston rod. A longitudinal axis extends between the proximal end and the distal end and the piston rod is axially moveable relative to the housing. The piston rod has a guide track and the drive member has a guide piece disposed and movable in the guide track. The guide track is configured with at least one section which is oblique relative to the longitudinal axis and defines a displacement for dispensing a single pre-set dose of medication during a relative movement between the guide piece and the piston rod when the guide piece cooperates with the oblique section between a distal final area of the oblique section and a proximal final area of the oblique section.

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