Fluid conveyance monitoring system in an extracorporeal blood treatment device
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United States of America Patent
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Jan 2, 2018
Grant Date -
Oct 13, 2016
app pub date -
Mar 30, 2016
filing date -
Apr 8, 2015
priority date (Note) -
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Abstract
A method for monitoring conveyance of fluid in a device for extracorporeal blood treatment, whereby fluid is conveyed by a peristaltic pump in a fluid system from a low-pressure side to a high-pressure side in that an elastically deformable fluid line positioned between the low-pressure side and the high-pressure side is deformed between a support surface and at least two squeeze elements of a rotor rotating opposite the support surface in such a way that a conveyance volume section is formed between the squeeze elements, whereby a fluid pressure value in the fluid system is detected for the conveyance volume section that is specific to the conveyance volume section, and whereby the detected conveyance-volume-specific fluid pressure value of a conveyance cycle n is compared with the detected conveyance-volume-specific fluid pressure value of a previous conveyance cycle n−x.
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