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:
Jul. 28, 2020
Filed:
Jan. 25, 2016
Novo Nordisk A/s, Bagsvaerd, DK;
Simon Munch Pedersen, Copenhagen N, DK;
Novo Nordisk A/S, Bagsvaerd, DK;
Abstract
The invention relates to a piston rod drive arrangement for an injection device used for self-administration of a plurality of individually set doses. The drive arrangement is made from a first element () mating the non-circular cross-section () of a piston rod () and a second element () having an inner thread () mating the outer thread of the piston rod. Whenever the first element () and the second element () are rotated in relation to each other the piston rod () is moved in an axial direction. In order to minimise the play in the threaded connection a resilient element () is proved to apply a force to the piston rod () in a longitudinal direction.