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:
Feb. 05, 2019
Filed:
Mar. 15, 2013
Novo Nordisk A/s, Bagsvaerd, DK;
Simon Munch Pedersen, Copenhagen, DK;
Simon Roervig, Copenhagen, DK;
Novo Nordisk A/S, Bagsvaerd, DK;
Abstract
The invention relates to a torsion spring driven injection device having a dial-down mechanism for dialling down a selected dose size. The torsion spring () is strained when setting a dose by rotating a proximally located dose setting button() relatively to the housing in a first direction and unstained when rotating the same dose setting button () in a second direction opposite the first direction. In order to secure the torsion spring () in its strained position a one-way ratchet mechanism is provided. This one-way ratchet mechanism comprises a fixation element () coupled to the housing and having a toothing () and a ratchet element () having at least one ratchet arm () engaging the fixation element () and which ratchet element () is operational coupled to the dose setting button (). The dose setting button () directly engages the at least one ratchet arm () when the dose setting button () is rotated in the second direction which releases the at least one ratchet arm () from the toothing () of the fixation element () and allows the ratchet element () to rotate relatively to the fixation element () in the second direction under influence of the torsion spring ().