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Drug delivery device inner housing having helical spline
专利权人:
David Plumptre
发明人:
David Plumptre
申请号:
US13322829
公开号:
US10406292B2
申请日:
2010.05.28
申请国别(地区):
US
年份:
2019
代理人:
摘要:
A dose setting mechanism for a drug delivery device is disclosed. The mechanism comprises an outer housing and an inner housing having an external groove and a helical spline. The inner housing helical spline guides a driver to dispense a set dose. A dial sleeve is disposed between the outer and inner housing and is rotatably engaged with the inner housing. When a dose is set, the dial sleeve is rotated and translates away from both the outer housing and the inner housing.
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