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

2009-05-15

2011-12-06

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S206000, C604S211000

Reexamination Certificate

active

08070727

ABSTRACT:
The present disclosure is directed to a dose setting mechanism that may be used with a drug delivery device. The dose setting mechanism may include an inner body having a helical thread along an outer cylindrical surface of the inner body, and a drive sleeve for driving a piston rod in an axial direction, the drive sleeve positioned within at least a portion of the inner body. The dose setting mechanism may further include a dose dial sleeve rotatably engaged with the helical thread of the inner body and a dial grip connected to the dose dial sleeve and releasably connected to the drive sleeve. Further when a dose is set, the dial grip is rotated so that both the dose dial sleeve and the drive sleeve rotate with respect to the inner body.

REFERENCES:
patent: 5679111 (1997-10-01), Hjertman et al.
patent: 2002/0120235 (2002-08-01), Enggaard
patent: 0 937 471 (1999-08-01), None
patent: 99/38554 (1999-04-01), None

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