Automatic injection device
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United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
Dec 6, 2001
app pub date -
Aug 7, 2001
filing date -
May 15, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides an auto-injection device including a housing, a container from which a product is dispensed by advancing a piston, the container shiftably accommodated by the housing and carrying a needle, and a drive unit including a driven member, wherein the driven member is shiftably accommodated by the housing and, during an auto-injection, is adapted for inserting the needle and advancing the container to a predetermined frontal position in relation to the housing and advancing the piston within the container for dispensing of the product, wherein the driven member remains uncoupled with the piston until the container reaches its frontal position, and upon the container reaching its frontal position, the driven member detaches from the container and couples with the piston for advancing the piston within the container.
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