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Autoinjector
专利权人:
Kevin Stamp;Charles Ian Cleathero
发明人:
Kevin Stamp,Charles Ian Cleathero
申请号:
US12530107
公开号:
US08187226B2
申请日:
2008.03.04
申请国别(地区):
US
年份:
2012
代理人:
摘要:
An autoinjector comprising an outer housing in which is mounted a syringe, the autoinjector further comprising an inner housing intermediate the outer housing and the syringe and an energy source in communication with said inner housing, wherein the inner housing is moveable by the energy source between three positions, namely a first position in. which the inner housing is in communication with the barrel such that, in use, the plunger and barrel are moveable axially so as to move at least part of said needle out of the outer housing; a second position in which the inner housing is in communication with the plunger but not the barrel such that, in use, said plunger is moveable axially into said barrel so as to expel medicament through the needle; and a third position in which the inner housing is in communication with neither the plunger nor the barrel such that, in use, the plunger and barrel are able to retract in order to retract the needle into the outer housing, characterized in that the plunger includes biasing means for axially biasing the barrel, before activation of the energy source, to a position forward of the part of the inner housing which acts on the barrel in said first 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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