Dual chamber passive retraction needle syringe
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United States of America Patent
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May 2, 2017
Issued Date -
N/A
app pub date -
Mar 24, 2014
filing date -
Jul 22, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Embodiments of a retractable syringe assembly are provided that include a single syringe barrel configuration and dual syringe barrel configuration. In one or more embodiments, the assemblies include a barrel having a dividing wall to divide the chamber to define a fluid chamber having a first cross-sectional width for retaining fluid and a needle chamber for housing a needle hub assembly. The assemblies include a projection extending radially outwardly from the plunger rod to interact with a ramped portion of the dividing wall to cause the needle cannula to retract and be housed within the needle chamber.
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