Detecting blood flow degradation
First Claim
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1. A method for detecting blood flow degradation in a dialysis system, the method comprising:
- calculating a current impedance value based on measured data, the measured data corresponding to a property of blood in a blood line;
comparing the current impedance value to a baseline impedance value; and
determining a cause of blood flow degradation indicated by the difference between the current impedance value and the baseline impedance value.
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Abstract
A method for detecting blood flow degradation in a dialysis system. The method includes measuring a flow rate of blood in a blood line, calculating a current impedance value based on the measured flow rate, and comparing the current impedance value to a baseline impedance value.
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Citations
48 Claims
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1. A method for detecting blood flow degradation in a dialysis system, the method comprising:
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calculating a current impedance value based on measured data, the measured data corresponding to a property of blood in a blood line; comparing the current impedance value to a baseline impedance value; and determining a cause of blood flow degradation indicated by the difference between the current impedance value and the baseline impedance value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 40, 41, 42, 46, 47, 48)
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19. A computer-readable medium having encoded thereon software for detecting blood flow degradation in a blood circuit, the software comprising instructions for:
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receiving information corresponding to measurement data from one or more sensors; calculating a current impedance value based on the measurement data; comparing the current impedance value to a baseline impedance value; and determining a cause of blood flow degradation indicated by the difference between the current impedance value and the baseline impedance value. - View Dependent Claims (20, 43)
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21. A dialysis system comprising:
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a blood circuit comprising; a blood pump, tubing for conveying blood between the blood pump and a patient; one or more sensors for measuring a property of blood within the tubing; and a controller in communication with the one or more sensors and configured to calculate a hydraulic impedance within the tubing based, at least in part, on signals received from the one or more sensors. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 44, 45)
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Specification