PRESSURE DETECTION DEVICE OF LIQUID FLOW ROUTE
First Claim
1. A pressure detection device of a liquid flow route that detects pressure of he liquid flow route configured of a flexible tube, a portion of which is connected to a peristaltically-actuated tube that causes an internal liquid to flow by being compressed in a radial direction and by being peristaltically actuated in a longitudinal direction by a peristalsis section of a peristaltic pump, and which enables a predetermined liquid to be circulated, the pressure detection device comprising:
- displacement detecting means that detects displacement of the peristaltically-actuated tube in the radial direction;
pressure calculating means that is able to calculate pressure of the liquid flow route based on the displacement of the peristaltically-actuated tube in the radial direction which is detected by the displacement detecting means; and
calibration means that calibrates the displacement detecting means and the pressure calculating means,wherein the calibration means includesclosed flow route forming means that is able to form a flow route which is closed and includes a portion in the peristaltically-actuated tube at which the displacement detecting means is disposed,pressure changing means that is able to arbitrarily change the pressure in the flow route formed and closed by the closed flow route forming means,pressure detection means that is able to detect pressure change in the flow route formed and closed by the closed flow, route forming means, andcalibration curve acquiring means that is able to produce and acquire a calibration, curve with which the displacement detecting means and pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means when the pressure is changed by the pressure changing means and a detection value of the displacement detecting means.
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Accused Products
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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Citations
20 Claims
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1. A pressure detection device of a liquid flow route that detects pressure of he liquid flow route configured of a flexible tube, a portion of which is connected to a peristaltically-actuated tube that causes an internal liquid to flow by being compressed in a radial direction and by being peristaltically actuated in a longitudinal direction by a peristalsis section of a peristaltic pump, and which enables a predetermined liquid to be circulated, the pressure detection device comprising:
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displacement detecting means that detects displacement of the peristaltically-actuated tube in the radial direction; pressure calculating means that is able to calculate pressure of the liquid flow route based on the displacement of the peristaltically-actuated tube in the radial direction which is detected by the displacement detecting means; and calibration means that calibrates the displacement detecting means and the pressure calculating means, wherein the calibration means includes closed flow route forming means that is able to form a flow route which is closed and includes a portion in the peristaltically-actuated tube at which the displacement detecting means is disposed, pressure changing means that is able to arbitrarily change the pressure in the flow route formed and closed by the closed flow route forming means, pressure detection means that is able to detect pressure change in the flow route formed and closed by the closed flow, route forming means, and calibration curve acquiring means that is able to produce and acquire a calibration, curve with which the displacement detecting means and pressure calculating means are calibrated by a relationship between the pressure change detected by the pressure detection means when the pressure is changed by the pressure changing means and a detection value of the displacement detecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification