Priming, integrity and head height methods and apparatuses for medical fluid systems
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United States of America Patent
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Aug 18, 2009
Grant Date -
Jun 16, 2005
app pub date -
Oct 27, 2004
filing date -
Oct 28, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Improved integrity test, priming sequence and bag height detection tests, apparatuses and methods for a medical fluid delivery system are provided. The integrity test includes a plurality of air pressure decay tests, using positive and negative pressure. The priming sequence includes pumping fluid through a portion of a patient line to be primed to overcome air in the line and other potential obstacles. The head height test measures a pressure build-up or drop-off within a pump chamber of a membrane pump. The measured pressure corresponds to a head height between a fluid supply and the pump or between the pump and a fluid drain. A determination is made whether the corresponding head height is acceptable.
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