Yannick Hourmand;Matthew Ekman;Timothy Donald Barrow-Williams
发明人:
Yannick Hourmand,Timothy Donald Barrow-Williams,Matthew Ekman
申请号：
US13806965
公开号：
US09233215B2
申请日:
2011.06.20
申请国别(地区):
US
年份:
2016
代理人:
摘要：
An auto-injector comprising an elongate housing arranged to contain a syringe and displacing medicament, wherein the syringe is slidably arranged with respect to the housing, spring capable of: pushing a needle from a covered position inside the housing into an advanced position, operating the syringe to supply a dose of medicament, and retracting the syringe with the needle into the covered position. Activating means is arranged to lock the spring in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring for injection. The spring is a single drive spring arranged for advancing the needle and for injecting the dose of medicament via a plunger. A damper is arranged with the plunger by a spline so as to cause rotation of either the plunger or the damper at least during part of a translation of the plunger in proximal direction.
