Control for non-occlusive blood pumps
AssigneeXenios AG
InventorIvo Simundic
Life of this patent
Estimating the term…
Abstract
The present disclosure pertains to control units for non-occlusive blood pumps of an extracorporeal circulatory support as well as systems comprising such a control unit and corresponding methods. Accordingly, a control unit for a non-occlusive blood pump of an extracorporeal circulatory support is configured to receive a flow value of the extracorporeal circulatory support, to receive a measurement of an arterial pressure and an ECG signal of a supported patient over a predetermined period of time, to determine a mean arterial pressure of the extracorporeal circulatory support or of the supported patient from the measurement of the arterial pressure and an energy equivalent pressure from the flow value and the arterial pressure.
Claims30
A control unit for a non-occlusive blood pump of an extracorporeal circulatory support, the control unit configured to
- receive, during an extracorporeal treatment, a flow value of the extracorporeal circulatory support;
- receive, during the extracorporeal treatment, a measurement of an arterial pressure and an ECG signal of a supported patient over a predetermined period of time;
- determine, iteratively during the extracorporeal treatment, a mean arterial pressure of the extracorporeal circulatory support or of the supported patient from the measurement of the arterial pressure and an energy equivalent pressure from the flow value and the arterial pressure;
- determine, iteratively during the extracorporeal treatment, a required value of at least one pulse parameter of the blood pump from the mean arterial pressure, the energy equivalent pressure, and the ECG signal to effect a ratio of the energy equivalent pressure to the mean arterial pressure of greater than 1.0;
- and
- adjust, during the extracorporeal treatment, the pulse parameter in dependence on the ECG signal.
A system for extracorporeal circulatory support of a patient, the system comprising:
- a venous patient access,
- an arterial patient access,
- a non-occlusive blood pump fluidly connected to the venous patient access and the arterial patient access and configured to provide blood flow from the venous patient access to the arterial patient access,
- an interface for receiving a measurement of an arterial pressure and an ECG signal of the patient, and
- a control unit configured to:
- receive, during an extracorporeal treatment, a flow value of the extracorporeal circulatory support;
- receive, during the extracorporeal treatment, a measurement of an arterial pressure and an ECG signal of a supported patient over a predetermined period of time;
- determine, iteratively during the extracorporeal treatment, a mean arterial pressure of the extracorporeal circulatory support or of the supported patient from the measurement of the arterial pressure and an energy equivalent pressure from the flow value and the arterial pressure;
- determine, iteratively during the extracorporeal treatment, a required value of at least one pulse parameter of the blood pump from the mean arterial pressure, the energy equivalent pressure, and the ECG signal to effect a ratio of the energy equivalent pressure to the mean arterial pressure of greater than 1.0;
- and
- adjust, during the extracorporeal treatment, the pulse parameter in dependence on the ECG signal.
A method for controlling a non-occlusive blood pump of an extracorporeal circulatory support, the method comprising:
- receiving, during an extracorporeal treatment, a flow value of the extracorporeal circulatory support;
- receiving, during the extracorporeal treatment, a measurement of an arterial pressure and an ECG signal of a supported patient over a predetermined period of time;
- determining, iteratively during the extracorporeal treatment, a mean arterial pressure of the extracorporeal circulatory support or of the supported patient from the measurement of the arterial pressure and an energy equivalent pressure from the flow value and the arterial pressure;
- determining, iteratively during the extracorporeal treatment, a required value of at least one pulse parameter of the blood pump from the mean arterial pressure, the energy equivalent pressure, and the ECG signal to effect a ratio of the energy equivalent pressure to the mean arterial pressure of greater than 1.0;
- and
- adjusting, during the extracorporeal treatment, the pulse parameter in dependence on the ECG signal.
Dependencies are inferred from the claim text.