Discharge device
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United States of America Patent
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Issued Date -
Mar 25, 2010
app pub date -
Sep 19, 2008
filing date -
Sep 19, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a discharge device for a liquid pharmaceutical medium having a reservoir for storing the medium, a pressurizing device (10) for feeding the medium and at least one discharge opening (80) for delivering the medium to an environment, the pressurizing device (10) having a pressure chamber (16), whose content can be pressurized by a translationally movable piston (14). According to the invention there is a piezoactuator device with a piezoactuator operatively coupled to the piston, or a coil actuator device (30) with an actuator coil (30) and an actuator core (32) to which force can be applied relative to actuator coil (30) by energizing the latter and either actuator coil (30) or actuator core (32) is fixed relative to the piston. Use for producing precisely defined fluid pressures in a discharge device.
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