Flush syringe having anti-reflux features
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United States of America Patent
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May 19, 2009
Grant Date -
Mar 24, 2005
app pub date -
Sep 23, 2003
filing date -
Sep 23, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An I.V. flush syringe assembly includes a barrel having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end including a distal wall with an elongate tip extending distally therefrom having a passageway therethrough in fluid communication with the chamber. A plunger having an elongate body portion and a stopper slidably positioned in fluid-tight engagement with the inside surface of the barrel is provided. Anti-reflux structure in said barrel is provided for controlling stopper deflection when fluid has been delivered from the chamber and the stopper is in contact with structure on the distal wall.
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