Yannick Hourmand;Matthew Ekman;Timothy Donald Barrow-Williams
发明人:
Matthew Ekman,Timothy Donald Barrow-Williams,Yannick Hourmand
申请号：
US13579455
公开号：
US09636467B2
申请日:
2011.02.16
申请国别(地区):
US
年份:
2017
代理人:
摘要：
An auto-injector for administering a dose of a liquid medicament includes an elongate housing that contains a syringe with a hollow needle and a bung for sealing the syringe and displacing the medicament. The housing has distal and proximal ends with an orifice to be applied to an injection site. A spring mechanism, upon activation, pushes the needle from a covered position inside the housing into an advanced position through the orifice. The spring mechanism also operates the syringe to supply the dose of medicament. An activating mechanism is arranged to lock the spring mechanism in a pressurized state prior and to release the spring mechanism upon manual operation. The spring mechanism includes a torsion spring ground at one end in the housing and in a gear member on the other end. The gear member is rotatable to move another gear member to push the bung towards the proximal end.
