Blood pump controllers and methods of use for improved energy efficiency
Methods, systems, and devices for a mechanical circulatory support system are disclosed herein. An implantable power supply can be part of a mechanical circulatory support system. The implantable power supply can include one or several energy storage components, a power source, a voltage converter, and an output bus. Power can be provided to the voltage converter from one or both of the power source and the first energy storage component. The voltage converter can convert the voltage of the power from a first voltage to a second voltage and can power the output bus.
1. A mechanical circulatory support system comprising:
an implantable blood pump;
a non-implantable charger;
an implantable power supply configured to electrically power the implantable blood pump, the implantable power supply comprising:
an input bus;
a first power pathway to the implantable blood pump;
a first energy storage component;
a second energy storage component, wherein the first and second energy storage components are arranged in series;
a second power pathway to the implantable blood pump, wherein the second power pathway is configured to be redundant to the first power pathway, and wherein the second power pathway connects the first energy storage component to the implantable blood pump via the input bus;
a third power pathway connecting the second energy storage component to the implantable blood pump, wherein the third power pathway is configured to be redundant to the first and second power pathways; and
a power source configured to receive electrical power from the non-implantable charger and provide power to the input bus;
wherein the non-implantable charger is configured to supply electrical power to the implantable power supply via transcutaneous energy transfer.
2. The mechanical circulatory support system of claim 1 , wherein the implantable power supply further comprises:
a voltage converter coupled to the input bus and configured to output a second voltage to the implantable blood pump.
3. The mechanical circulatory support system of claim 2 , wherein the first power pathway connects the power source to the implantable blood pump via the input bus and the voltage converter, and wherein the second power pathway connects the first energy storage component to the implantable blood pump via the input bus and the voltage converter.
4. The mechanical circulatory support system of claim 3 , wherein the voltage converter comprises a buck converter.
5. The mechanical circulatory support system of claim 3 , wherein the voltage converter comprises a flyback converter.
6. The mechanical circulatory support system of claim 3 , wherein the third power pathway excludes the input bus and the voltage converter.
7. The mechanical circulatory support system of claim 6 , wherein the first energy storage component has a first voltage, and wherein the second energy storage component has a second voltage.
8. The mechanical circulatory support system of claim 7 , wherein the first and second voltages are equal.
9. The mechanical circulatory support system of claim 7 , wherein the first voltage is different than the second voltage.
10. The mechanical circulatory support system of claim 9 , further comprising a controller, wherein the controller comprises an external power supply electrically coupleable to the implantable blood pump via an output bus.
11. The mechanical circulatory support system of claim 10 , wherein the output bus is electrically coupled to the second energy storage component.
12. The mechanical circulatory support system of claim 11 , wherein the output bus is electrically coupled to the second energy storage component such that a voltage of the output bus is configured to match the second voltage.
13. The mechanical circulatory support system of claim 1 , wherein the non-implantable charger comprises:
a first energy storage feature;
a second energy storage feature, wherein the first and second energy storage features are arranged in series; and
a second voltage converter.
14. The mechanical circulatory support system of claim 13 , wherein the second voltage converter comprises a boost converter configured to double a voltage of at least one of: the first energy storage feature; and the second energy storage feature.
15. The mechanical circulatory support system of claim 14 , further comprising at least one of: a driveline which electrically couples the power source of the implantable power supply to the non-implantable charger; or a transcutaneous energy transfer system transmitter and a transcutaneous energy transfer system receiver, wherein the non-implantable charger comprises the transcutaneous energy transfer system transmitter, and wherein the power source comprises the transcutaneous energy transfer system receiver.
16. The mechanical circulatory support system of claim 1 , wherein the first energy storage component comprises a first battery comprising a first number of cells, and wherein the second energy storage component comprises a second battery comprising a second number of cells.
17. The mechanical circulatory support system of claim 16 , wherein the first number of cells is different than the second number of cells.