Patent · US Active

Drive mechanism for a drug delivery device and drug delivery device

US9393368B2 · kind B2 · utility

64Cited by

4References

14Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Philippe Nzike · Frankfurt am Main, DE
Steffen Raab · Frankfurt am Main, DE
Uwe Dasbach · Frankfurt am Main, DE
Uwe Boeser · Frankfurt am Main, DE
Ulrich Bruggemann · Frankfurt am Main, DE

Key dates

Filing date	Nov 11, 2011
Grant date	Jul 19, 2016
Priority date	—
Expiry date	Mar 20, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M5/31571
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The drive mechanism comprises a piston rod, a dose member with a thread engaging a corresponding thread of the body to allow a helical movement of the dose member with respect to the body, a drive sleeve rotationally coupled to the dose member, and stop means provided to restrict or inhibit a movement of the drive sleeve in the proximal direction and in the distal direction with respect to the body, the drive sleeve and the piston rod being unidirectionally coupled.

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