Drug delivery device inner housing having helical spline
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United States of America Patent
Stats
-
Sep 4, 2012
Grant Date -
Dec 30, 2010
app pub date -
May 27, 2010
filing date -
Jun 1, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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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Family
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