Device for automatically injecting an active agent
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United States of America Patent
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Oct 5, 2010
Grant Date -
Dec 15, 2005
app pub date -
May 20, 2005
filing date -
Nov 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for automatically injecting an active agent, the device involving a syringe filled with an active agent and carrying an injection needle, the syringe displaceable in a receiver by the tension of a spring. A transmission displaceable by at least one spring traverses a first partial path for sticking the injection needle and a second partial path for emptying the active agent from the syringe. The at least one spring acts between the transmission and an intermediate part, and another spring acts between the intermediate part and a support fixedly connected to the receiver. An indicator visible from the outside is connected to the intermediate part, moves only during the second partial path, and traverses a path length that is substantially smaller that the sum of both partial paths.
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