Device and methods for body fluid flow control in extracorporeal fluid treatments
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United States of America Patent
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Sep 25, 2007
Grant Date -
Mar 18, 2004
app pub date -
Oct 12, 2001
filing date -
Oct 12, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed are devices and methods for the control of body fluid flow in the extracorporeal treatment of body fluid. Body fluid flow through on of a body fluid flow circuit (10, 50, 60, 100 or 250) is controlled by alternating applying vacuum pressure and positive pressure to the circuit through a pumping chamber (30, 51, 66, 102, or 200) coordinated with flow control valves (40, 42, 44, 62, 114, 116, 118, and 120) to effect a net downstream flow of body fluid through the circuit.
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