Patent · US Active

Drive mechanism for drug delivery devices

US8900202B2 · kind B2 · utility

1Cited by

2References

11Claims

0Family size

Assignee

Sanofi-Aventis Deutschland GMBH · DE

Inventors

Michael Helmer · Frankfurt am Main, DE
Claudia Matthias · Frankfurt am Main, DE
Peter Nober · Rommersheim, DE
Reza Shahbazfar · Wiesbaden, DE
Benjamin Schaefer · Haßloch, DE
Leo Zeimetz · Lennestadt, DE

Key dates

Filing date	Oct 8, 2010
Grant date	Dec 2, 2014
Priority date	—
Expiry date	Aug 20, 2031

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2207/00
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The present invention relates to a drive mechanism for a drug delivery device for dispensing of a dose of a medicinal product, comprising: a holder for a product-containing cartridge, the cartridge having a piston slidably arranged therein in an axial direction, a piston rod to be operably engaged with the cartridge's piston for dispensing of a dose of the medicinal product, an adjusting assembly adapted to eliminate axial clearance between the piston and the piston rod, wherein the adjusting assembly comprises at least one radially extending spike element for mutually locking in position the piston and the piston rod irrespective of the relative distance between piston and piston rod.

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