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:
Oct. 05, 2021
Filed:
Mar. 15, 2017
Sanofi, Paris, FR;
Markus Ploch, Frankfurt am Main, DE;
Sanofi, Paris, FR;
Abstract
The disclosure provides a dose controlled multi-shot injection device comprising a housing and a dose setting mechanism, wherein the dose setting mechanism includes a drive spring, a rotatable dose setting handle adapted to set a dose of medicament, thereby biasing the drive spring, and a ratchet mechanism for maintaining the drive spring in a biased state against a spring force at a set dose. The ratchet mechanism includes a fixed ratchet element coupled to the housing and having a circumferential teething, a movable flexible ratchet element provided with at least two teethed portions configured to engage the circumferential teething at least pairwise at any one of a plurality of engaging positions, which respectively represent a set dose, and a rotational element coupled to the dose setting handle configured to translate torque from the dose setting handle into a number of forces radially acting on the flexible ratchet element resulting in an elastic deformation of the flexible ratchet element, thereby releasing the engagement between the teethed portion and the circumferential teething.