Piston Rod Drive System for a Drug Delivery Device
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United States of America Patent
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Issued Date -
Feb 27, 2014
app pub date -
Dec 22, 2011
filing date -
Dec 23, 2010
priority date (Note) -
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Abstract
A piston rod drive system is provided comprising a main body adapted for coupling with a reservoir, a user operable activation element operatively coupled with the main body and configured to move axially and rotationally relative to the main body between a first position and a second position, and a piston rod element operatively coupled with the activation element and the main body and configured to move axially and non-rotationally relative to the main body in response to the activation element being moved between the first position and the second position.
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