Auto-pen for a two-chamber ampoule

Details Auto-pen for a two-chamber ampoule Auto-pen for a two-chamber ampoule

2005-09-01

2010-10-19

Sirmons, Kevin C (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S191000, C604S082000, C604S092000

Reexamination Certificate

active

07815598

ABSTRACT:
An injection device for use with a two-chamber ampoule, wherein the device includes a front casing part with which the two-chamber ampoule can be associated, a rear casing part, a threaded drive accommodated by the rear casing part, a piston rod which, during a blending movement, is moved by the threaded drive toward a dispensing end of the device and slaves at least a closing piston of the two-chamber ampoule in the process, wherein a spring element presses the piston rod toward the dispensing end during a delivery movement.

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