Pressure detection device of liquid flow route
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United States of America Patent
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Apr 24, 2018
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N/A
app pub date -
Apr 16, 2015
filing date -
Oct 19, 2012
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Abstract
A pressure detection device of a liquid flow route includes; displacement detecting means that detects displacement of a peristaltically-actuated tube in the radial direction; pressure calculating means that is able to calculate blood removal pressure based on the displacement of the peristaltically-actuated tube; closed flow route forming means that is able to form a closed flow route which includes a portion at which the displacement detecting means is disposed; pressure changing means that is able to arbitrarily change the pressure in the closed flow route; pressure detection means that is able to detect pressure change in the closed flow route; and calibration curve acquiring means that is able to produce and acquire a calibration curve with which the displacement detecting means and the pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means and a detection value of the displacement detecting means.
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