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OwnerMatthias Heinke, Johannes Hörth +1inventors
InventorsMatthias Heinke, Johannes Hörth, Wofgang Schultz
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The present invention relates to devices for monitoring and optimizing a temporal trigger stability of an extracorporeal circulatory support and to control and regulation units for extracorporeal circulatory support comprising such a device and corresponding methods. Accordingly, a device (10) for monitoring a temporal trigger stability of an extracorporeal circulatory support is suggested, which is adapted to receive a first data set (14) of a measurement of an ECG signal of a supported patient over a predefined period of time. The device (10) comprises an evaluation unit (16) adapted to determine or identify a plurality of R-triggers (26) from the first data set (14), wherein the evaluation unit (16) is furthermore adapted to receive or provide a second data set (20) comprising evaluated ECG signals and a plurality of R-triggers (28) and to selectively map the second data set (20) onto the first data set (14). The device is furthermore adapted to output a signal (22) indicative of a temporal distance of successive R-triggers (26) from the first data set (14) and successive R-triggers (28) from the second data set (20) being mapped thereon.
A device (10) for monitoring and optimizing a temporal trigger stability of an extracorporeal circulatory support, the device being adapted to
The device (10) according to any of the preceding claims, wherein the first data set (14) comprises online ECG measurement signals of a currently performed extracorporeal circulatory support and the second data set (20) comprises at least partially offline stored ECG signals.
The device (10) according to any of the preceding claims, wherein the device is configured to output the signal based on a comparison of the R-R interval of the present cardiac cycle with an R-R interval of a preceding, in particular the directly preceding cardiac cycle.
The device (10) according to any of the preceding claims, wherein the signal (22) to be output is a warning signal or an R-trigger adapted to the R-triggers (28) of the second data set (20), if the temporal distance exceeds a predefined threshold.
The device (10) according to any of the preceding claims, wherein the evaluation unit (16) is adapted to determine the temporal distance by means of correlation analysis, wherein the device (10) is adapted to output the signal (22), if a temporal distance of an R-trigger (26) lies outside a predefined confidence interval.
The device (10) according to any of the preceding claims, wherein the selective mapping comprises temporal and spectral mapping.
The device (10) according to any of the preceding claims, wherein the evaluation unit (16) is adapted to evaluate the measured ECG signal temporally and/or spatially and to enable the mapping on the evaluated ECG signal of the first data set (14).
The device (10) according to any of the preceding claims, wherein the measured ECG signal of the first data set (14) comprises at least a first measurement signal (24A) from a first ECG lead and a second measurement signal (24B, 24C) from a second ECG lead, wherein the first and second ECG leads are spatially separated from each other, and wherein the evaluation unit (16) is adapted to map the second data set (20) onto the respective measurement signal (24A-24C) or a spatially evaluated common measurement signal.
A control and regulation unit for an extracorporeal circulatory support, comprising a device according to any of the preceding claims, wherein the control and regulation unit is adapted to output a control and/or regulation signal for the extracorporeal circulatory support at a predefined time point after a respective R-trigger and taking into account the signal to be output.
A method for monitoring and optimizing a temporal trigger stability of an extracorporeal circulatory support, comprising the steps of:
Dependencies are inferred from the claim text.