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INJECTION DEVICE HAVING AUTOMATIC NEEDLE RETRACTION
专利权人:
发明人:
申请号:
EP15712288.8
公开号:
EP3119455B1
申请日:
2015.03.16
申请国别(地区):
EP
年份:
2018
代理人:
摘要:
The present invention relates to an injection device for delivering set doses of a liquid drug to a user. The injection device has a scale drum for displaying the set dose, which scale drum is helically guided in a housing. The scale drum is thus rotational in relation to the housing between a zero position and a set position for displaying the set dose. Further, a needle cannula secured to a hub is mounted in an axially movable manner. The axial movement of the hub is generated by a spring. A blocking mechanism interacting between the scale drum and hub controls the axial movement of the hub such that the needle cannula automatically retracts from the skin of a user in response to the scale drum reaching the zero position.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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