Medication delivery device with telescopic piston rod
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United States of America Patent
Stats
-
Jan 21, 2003
Grant Date -
Aug 8, 2002
app pub date -
Oct 25, 2001
filing date -
Oct 27, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A medication delivery device comprising a container containing a fluid medicament. The medicament is expelled from the container by moving forward an elastomeric piston inside the cartridge. The piston is moved forward by a telescopic piston rod, which can either be centrally located in the container or eccentric located. One end of the telescopic piston rod abuts the elastomeric piston either by itself or through an additional plate. The abutment having a friction large enough to prevent a lower part of the telescopic rod from rotating. In order to prevent the elastomeric piston from rotating inside the container a second telescopic piston rod is provided parallel with the first telescopic piston rod.
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