Proximal catheter assembly having a self-limiting aspiration valve
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United States of America Patent
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Feb 28, 2006
Grant Date -
Oct 2, 2003
app pub date -
Oct 21, 2002
filing date -
Mar 29, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is directed to a proximal catheter assembly configured to facilitate natural or suction-assisted aspiration through a catheter lumen. The proximal catheter assembly comprises a multi-function valve configured to perform functions associated with conventional check valves and relief valves. The valve is configured to regulate the direction of fluid flow, and further configured to regulate the rate of suction-assisted aspiration provided through the lumen of the catheter. When the rate of suction-assisted aspiration exceeds a predetermined threshold, the valve opens to allow fluid to be drawn from tubing coupled to the proximal catheter assembly, thereby mitigating excessively high rates of aspiration imposed upon the patient's vessel.
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