Drive mechanisms suitable for use in drug delivery devices

Details Drive mechanisms suitable for use in drug delivery devices Drive mechanisms suitable for use in drug delivery devices

2011-04-05

2011-04-05

Lucchesi, Nicholas D (Department: 3763)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

Reexamination Certificate

active

07918832

ABSTRACT:
A drive mechanism for use in a drug delivery device comprising an epicyclic gearbox. This drive mechanism includes a housing having a helical thread; a piston rod having a non-circular cross section and an external helical thread; a dose dial sleeve, which is threadedly engaged with the housing and being rotatable with respect to the housing; and a drive sleeve, located between the housing and the piston rod, which is threadedly engaged with the piston rod.

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Reissue U.S. Appl. No. 10/442,855, 

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