Methods and systems for controlling a blood pump
First Claim
1. A method for controlling an implantable blood pump with an external controller, the method comprising:
- identifying a status of one or more power sources for the implantable blood pump that is indicative of a mode to conserve power; and
transmitting, from the external controller, a command signal to the implantable blood pump to transition the implantable blood pump from a pulsatile pumping operation to a constant speed operation, the constant speed operation consuming less power than the pulsatile pumping operation; and
receiving and processing, with electronics of the implantable blood pump, the command signal to transition the implantable blood pump from the pulsatile pumping operation to the constant speed operation;
wherein identifying the power source status that is indicative of the mode to conserve power comprises;
identifying a low power hazard condition status;
identifying a duration of time in which the implantable blood pump is operated in the low power hazard condition; and
comparing the duration of time to a threshold time period; and
transmitting the command signal to the implantable blood pump when the duration of time exceeds the threshold time period.
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Accused Products
Abstract
The present invention generally relates to ventricular assist device power monitoring and conservation. In some embodiments, a pump controller may transition the pump to operate in a power-saving operational mode when a power source and/or a power source condition indicate a need to conserve power. In some embodiments, when the power source is an emergency battery and when the emergency battery has powered the pump for an extended period of time, the controller may signal the pump to operate in the power saving-operational mode. In some embodiments, when a low power hazard condition is triggered by signals from one or more external power sources, the controller may signal the pump to transition to the power-saving operational mode if the condition lasts for an extended period of time. In some embodiments, the controller may trigger the power-saving mode when the emergency backup battery is below a voltage threshold.
183 Citations
38 Claims
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1. A method for controlling an implantable blood pump with an external controller, the method comprising:
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identifying a status of one or more power sources for the implantable blood pump that is indicative of a mode to conserve power; and transmitting, from the external controller, a command signal to the implantable blood pump to transition the implantable blood pump from a pulsatile pumping operation to a constant speed operation, the constant speed operation consuming less power than the pulsatile pumping operation; and receiving and processing, with electronics of the implantable blood pump, the command signal to transition the implantable blood pump from the pulsatile pumping operation to the constant speed operation; wherein identifying the power source status that is indicative of the mode to conserve power comprises; identifying a low power hazard condition status; identifying a duration of time in which the implantable blood pump is operated in the low power hazard condition; and comparing the duration of time to a threshold time period; and transmitting the command signal to the implantable blood pump when the duration of time exceeds the threshold time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for controlling an implantable blood pump with a controller, the method comprising:
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identifying a status of one or more power sources for the implantable blood pump that is indicative of a mode to conserve power; and transmitting a signal to the implantable blood pump from the controller-to transition from a pulsatile pumping operation to a constant speed operation, the constant speed operation consuming less power than the pulsatile pumping operation; wherein identifying the power source status that is indicative of the mode to conserve power comprises identifying a disconnection between the controller and one or more external power sources or a low power hazard condition status; wherein identifying the power source status that is indicative of the mode to conserve power comprises; identifying a duration of time in which the controller is disconnected from the one or more external power sources or a duration of time in which the implantable blood pump is operated in the low power hazard condition; and comparing the duration of time to a threshold time period; and transmitting the signal to the implantable blood pump when the duration of time exceeds the threshold time period. - View Dependent Claims (14)
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15. A method of controlling an implantable blood pump with an external controller, the implantable blood pump being powered by one or more power sources, the method comprising:
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determining a type of one or more power sources that are powering the implantable blood pump; identifying an operating condition associated with the type of one or more power sources that is indicative of a mode to conserve power; transmitting, from the external controller, a command signal to the implantable blood pump to transition the implantable blood pump from a first operational mode to a second operational mode upon the identification of the operating condition associated with the type of one or more power sources that is indicative of the mode to conserve power, the second operational mode consuming less power than the first operational mode; receiving and processing, with electronics of the implantable blood pump, the command signal to transition the implantable blood pump from the first operational mode to the second operational mode; wherein identifying the operating condition that is indicative of the mode to conserve power comprises; identifying a low power hazard condition status; identifying a duration of time in which the implantable blood pump is operated in the low power hazard condition; and comparing the duration of time to a threshold time period; and transmitting the command signal to the implantable blood pump when the duration of time exceeds the threshold time period. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A implantable blood pump system, comprising:
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an implantable blood pump configured to supplement or replace the pumping function of a heart and; an external controller communicatively coupled with the implantable blood pump and configured to identify a status of one or more power sources for the implantable blood pump that is indicative of a mode to conserve power, and transmit a command signal to the implantable blood pump to transition from a pulsatile pumping mode to a constant speed mode, the constant speed mode consuming less power than the pulsatile pumping operation; and wherein the implantable blood pump includes associated electronics for receiving and processing the command signal to transition the implantable blood pump from the pulsatile pumping mode to the constant speed mode; wherein the external controller is configured to identify a low power hazard condition status as being indicative of the mode to conserve power; wherein the external controller is configured to identify a duration of time in which the implantable pump is operated in the low power hazard condition; and wherein the external controller is configured to compare the duration of time to a threshold time period; and wherein the controller is configured to transmit the command signal to the implantable blood pump to transition from the pulsatile pumping mode to the constant speed mode when the duration of time exceeds the threshold time period. - View Dependent Claims (33, 34, 35, 36, 37, 38)
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Specification