Dialysis systems having air traps with internal structures to enhance air removal
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United States of America Patent
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Feb 22, 2011
Grant Date -
Apr 2, 2009
app pub date -
Oct 1, 2007
filing date -
Oct 1, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dialysis fluid cassette includes a rigid portion defining first and second valve chambers, the rigid portion further defining an air separation chamber in fluid communication with the first and second valve chambers, the air separation chamber including a baffle and structured such that when the cassette is placed in a dialysis instrument, (i) the baffle extends upwardly from a bottom of the air separation chamber and (ii) first and second openings to the air separation chamber, communicating fluidly and respectively with the first and second valve chambers, are located near the bottom of the air separation chamber, such that the dialysis fluid is forced up one side of the baffle and down the other side of the baffle when flowing through the air separation chamber.
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