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:
Mar. 22, 2022
Filed:
Sep. 11, 2017
Norton Healthcare Limited, West Yorkshire, GB;
Karl James Hewson, Cambridgeshire, GB;
Jeremy James Robert Kooyman, Cambridgeshire, GB;
Xorge Castro Pelayo, Cambridgeshire, GB;
James Alexander Davies, Cambridgeshire, GB;
Oliver Hart, Cambridgeshire, GB;
Joshua Arieh Shenker, Cambridgeshire, GB;
Matthew Alexander Morris, Cambridgeshire, GB;
Matthew Keith Fordham, Essex, GB;
Norton Healthcare Limited, Castleford, GB;
Abstract
An injection device comprising a housing having a longitudinal axis, a dose selector () capable of being rotated about said longitudinal axis with respect to said housing by a user to set a dose of medicament to be ejected from the injection device and a spring () capable of storing energy necessary for ejecting the dose of medicament from the injection device. The spring is coupled to the dose selector such that a charging force can be transferred from the dose selector to the spring to increase the energy stored by the spring. The injection device further comprises a ratchet arrangement () moveable between an engaged state in which the spring is limited from unwinding from a currently selected dose and a disengaged state in which the spring is able to unwind and a drive assembly including a plunger element () capable of providing an axial force for ejecting a dose of medicament from the injection device. The drive assembly further comprises a drive clutch () moveable from a disengaged state in which a force path from the spring to the plunger element is interrupted and an engaged state in which the drive assembly can provide the axial force for ejecting a dose of medicament from the injection device via said force path.