Karl James HEWSON,George BOSTOCK,George Robert Michael SAVELL,James Alexander DAVIES,Oliver HART,Joshua Arieh SHENKER,Matthew Alexander MORRIS,Matthew Keith FORDHAM
申请号：
US16332031
公开号：
US20190224413A1
申请日:
2017.09.11
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An injection device comprising a housing (12) and a dose selector (16) to set a dose of medicament to be ejected from the injection device. A spring (20) coupled to the dose selector stores energy necessary for ejecting the dose from the injection device. A ratchet (25) arrangement is provided to rotationally couple a ratchet component and an internal surface of the housing in a coupled state and to allow relative rotation between the ratchet component and the internal surface of the housing in an uncoupled state. An over-torque feature (27) located between the dose selector and the spring is actuatable, when the rotation of the dose selector causes the charging force to exceed a defined limit, to reduce the charging force transferred from the dose selector to the spring. Both the ratchet component and the over-torque feature are provided on a single component (28).
