Safety syringe and method for using the same
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United States of America Patent
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Jan 7, 2014
Grant Date -
N/A
app pub date -
Jul 13, 2009
filing date -
Jul 14, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A safety syringe that effectively prevents the administration of an injection in excess of a maximum injection pressure, and that provides a clear, immediate tactile feedback to the practitioner each time a maximum injection pressure is exceeded. The practitioner is provided a predetermined number of attempts to inject fluid without exceeding the maximum injection pressure, each time receiving a direct tactile feedback in the form of a ratcheting click within the plunger assembly of the syringe. After a final attempt, the next over-pressure event causes a disconnect between the thumb plate of the syringe and the piston that engages the fluid within the syringe barrel, positively prevent a potentially harmful injection. In an illustrative embodiment, the plunger assembly includes a distal portion connected to the piston and a proximal portion, connected to the thumb plate.
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