Reusable injection device for distributing a preselected dose
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United States of America Patent
Stats
-
Sep 14, 1993
Issued Date -
N/A
app pub date -
Mar 5, 1992
filing date -
Oct 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A syringe-type injection device for dispensing a preset dose of a liquid drug includes two sleeve-like components releasably connected with each other so as to be aligned in axial direction. One of the sleeve-like components is a holder for a dispensing mechanism and the other of the sleeve-like components is adapted to accommodate an ampoule and a cannula. The dispensing mechanism includes an axially movable piston rod for actuating a plug of the ampoule. The piston rod has a radially projecting cam follower and the holder defines at least one axially extending slot having a predetermined length, wherein the cam follower is received by the at least one slot, such that only a single dose can be dispensed from an ampoule by an axial movement of the piston rod.
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