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

2004-03-02

2009-06-30

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S207000

Reexamination Certificate

active

07553299

ABSTRACT:
A drive mechanism suitable for use in drug delivery devices is disclosed. The drive mechanism may be used with injector-type drug delivery devices, such as those permitting a user to set the delivery dose. The drive mechanism may include a housing, a piston rod, and a unidirectional coupling between the housing and the piston rod. The drive mechanism may also include a dose dial sleeve and a drive sleeve, with a clutch mean located therebetween to prevent relative rotation between the dial sleeve and the drive sleeve when in a coupled state and to permit relative rotation between the dial sleeve and the drive sleeve when in a de-coupled state.

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