Pump chamber configured to contain a residual fluid volume for inhibiting the pumping of a gas
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United States of America Patent
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Oct 15, 2013
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N/A
app pub date -
Jul 30, 2010
filing date -
Jul 20, 1999
priority date (Note) -
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Abstract
The present invention involves, in some embodiments, pump chambers are configured to prevent contact of at least a portion of a membrane movable within the pump chamber to effect pumping from contacting an inner wall of the pump chamber, which can, in some embodiments, be useful to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. The pump chambers and pumping cartridges may form part of a pumping system further comprising valve(s) and a controller configured to detect and purge gas from the pump chamber.
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