METHOD AND DEVICE FOR MONITORING THE INTEGRITY OF A CONNECTION SYSTEM
First Claim
1. A method for monitoring the integrity of a connection system between first and second fluid containing systems, wherein the first fluid containing system comprises a first pulse generator, and the second fluid containing system comprises a second pulse generator, and wherein at least one pressure sensor is arranged in the first fluid containing system to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator, said method comprising:
- generating a time-dependent monitoring signal based on measurement data obtained from said at least one pressure sensor such that the monitoring signal contains a sequence of apparent pulses, said apparent pulses representing a superposition of the second pulses on the first pulses when the connection system is intact;
processing the monitoring signal to calculate a parameter value based on a pulse feature of at least one of the apparent pulses in the monitoring signal, the parameter value representing a disturbance caused by the superposition of the second pulses on the first pulses; and
determining the integrity of the connection system based at least partly on the parameter value.
1 Assignment
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Accused Products
Abstract
A device is configured to monitor the integrity of a connection system between first and second fluid containing systems comprising first and second pulse generators. A pressure sensor is arranged in the first fluid containing system to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator. The device operates a monitoring method, by generating (42) a time-dependent pressure signal based on measurement data obtained from the pressure sensor such that the pressure signal contains a sequence of apparent pulses. The apparent pulses represent a superposition of the second pulses on the first pulses when the connection system (C) is intact. The device processes (44) the pressure signal to calculate a parameter value based on a pulse feature of at least one of the apparent pulses in the pressure signal. The parameter value represents a disturbance caused by the superposition of the second pulses on the first pulses, and may be given as a measure of statistical dispersion, pulse-to-pulse symmetry, or first pulse similarity. The device determines (45) the integrity of the connection system based at least partly on the parameter value. The first fluid containing system may be an extracorporeal blood circuit, and the second fluid containing system may be a human or animal subject.
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Citations
28 Claims
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1. A method for monitoring the integrity of a connection system between first and second fluid containing systems, wherein the first fluid containing system comprises a first pulse generator, and the second fluid containing system comprises a second pulse generator, and wherein at least one pressure sensor is arranged in the first fluid containing system to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator, said method comprising:
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generating a time-dependent monitoring signal based on measurement data obtained from said at least one pressure sensor such that the monitoring signal contains a sequence of apparent pulses, said apparent pulses representing a superposition of the second pulses on the first pulses when the connection system is intact; processing the monitoring signal to calculate a parameter value based on a pulse feature of at least one of the apparent pulses in the monitoring signal, the parameter value representing a disturbance caused by the superposition of the second pulses on the first pulses; and determining the integrity of the connection system based at least partly on the parameter value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A computer readable medium comprising instructions which, when executed by a processor, cause the processor to monitor the integrity of a connection system between first and second fluid containing systems, wherein the first fluid containing system comprises a first pulse generator, and the second fluid containing system comprises a second pulse generator, and wherein at least one pressure sensor is arranged in the first fluid containing system to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator, said processor monitors the integrity of the connection system by:
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generating a time-dependent monitoring signal based on measurement data obtained from said at least one pressure sensor such that the monitoring signal contains a sequence of apparent pulses, said apparent pulses representing a superposition of the second pulses on the first pulses when the connection system is intact; processing the monitoring signal to calculate a parameter value based on a pulse feature of at least one of the apparent pulses in the monitoring signal, the parameter value representing a disturbance caused by the superposition of the second pulses on the first pulses; and determining the integrity of the connection system based at least partly on the parameter value.
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27. A device for monitoring the integrity of a connection system between first and second fluid containing systems, wherein the first fluid containing system comprises a first pulse generator, and the second fluid containing system comprises a second pulse generator, and wherein at least one pressure sensor is arranged in the first fluid containing system and configured to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator, said device comprising:
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means for generating a time-dependent monitoring signal based on measurement data obtained from said at least one pressure sensor such that the monitoring signal contains a sequence of apparent pulses, said apparent pulses representing a superposition of the second pulses on the first pulses when the connection system is intact; means for processing the monitoring signal to calculate a parameter value based on a pulse feature of at least one of the apparent pulses in the monitoring signal, the parameter value representing a disturbance caused by the superposition of the second pulses on the first pulses; and means for determining the integrity of the connection system based at least partly on the parameter value.
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28. A device for monitoring the integrity of a connection system between first and second fluid containing systems, wherein the first fluid containing system comprises a first pulse generator, and the second fluid containing system comprises a second pulse generator, and wherein at least one pressure sensor is arranged in the first fluid containing system and configured to detect first pulses originating from the first pulse generator and second pulses originating from the second pulse generator, said device comprising:
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an input configured to obtain measurement data from said at least one pressure sensor, and a signal processor connected to said input and being configured to; generate a time-dependent monitoring signal based on the measurement data, such that the monitoring signal contains a sequence of apparent pulses, said apparent pulses representing a superposition of the second pulses on the first pulses when the connection system is intact; process the monitoring signal for calculation of a parameter value based on a pulse feature of at least one of the apparent pulses in the monitoring signal, the parameter value representing a disturbance caused by the superposition of the second pulses on the first pulses; and determine the integrity of the connection system based at least partly on the parameter value.
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Specification