The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 02, 2014
Filed:
Oct. 08, 2010
Michael Helmer, Frankfurt am Main, DE;
Claudia Matthias, Frankfurt am Main, DE;
Peter Nober, Rommersheim, DE;
Reza Shahbazfar, Wiesbaden, DE;
Benjamin Schaefer, Bischoffen, DE;
Leo Zeimetz, Büttelborn, DE;
Michael Helmer, Frankfurt am Main, DE;
Claudia Matthias, Frankfurt am Main, DE;
Peter Nober, Rommersheim, DE;
Reza Shahbazfar, Wiesbaden, DE;
Benjamin Schaefer, Bischoffen, DE;
Leo Zeimetz, Büttelborn, DE;
Sanofi-Aventis Deutschland GmbH, Frankfurt am Main, DE;
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.