Multiple chamber medication dispensing apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Mar 15, 2007
app pub date -
May 25, 2004
filing date -
May 30, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A medication dispensing apparatus that can be actuated with a small force to deliver a precise dose. The apparatus includes a fluid container having an injection chamber and a storage chamber in fluid flow communication. A first plunger is movable to alter the volume of the injection chamber, and a second plunger is movable to alter the volume of the storage chamber. The injection chamber has a cross-sectional area that is smaller than a cross-section area of the storage chamber. During dose setting, a drive assembly drivingly connected to the plungers shifts the plungers different distances so as to reduce the volume of the storage chamber while simultaneously increasing the volume of the injection chamber a similar amount. After dose setting, an actuator is movable with a small force to shift the first plunger to reduce the volume of the injection chamber to force medicine through an outlet of the fluid container.
First Claim
Family
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Cited Art Landscape
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