Generating artificial pulse
First Claim
1. A method of controlling an implantable blood pump, the method comprising:
- operating the implantable blood pump in an artificial pulse mode for a first period of time;
transmitting a first signal to the implantable blood pump to transition the implantable blood pump from the artificial pulse mode to a constant speed mode;
operating the implantable blood pump in the constant speed mode for a second period of time; and
transmitting a second signal to the implantable blood pump to transition the implantable blood pump from the constant speed mode to the artificial pulse mode;
operating the implantable blood pump back in the artificial pulse mode.
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Accused Products
Abstract
In order to produce a pulsatile blood flow pattern that includes time periods of relatively high blood flow rates and time periods of relatively low blood flow rates, the operating speed of a blood pump can be selectively controlled to produce an operating speed pattern that includes time periods of relatively high rotation speeds and periods of relatively low rotation speeds. For example, the blood pump is rotated at a first speed for a first period of time. The speed of the blood pump is then decreased from the first speed to a second speed and is operated at the second speed for a second amount of time. The speed of the blood pump is then decreased to a third speed for a third amount of time. If desired, the operating speed pattern can be repeated to continue the pulsatile blood flow pattern.
138 Citations
25 Claims
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1. A method of controlling an implantable blood pump, the method comprising:
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operating the implantable blood pump in an artificial pulse mode for a first period of time; transmitting a first signal to the implantable blood pump to transition the implantable blood pump from the artificial pulse mode to a constant speed mode; operating the implantable blood pump in the constant speed mode for a second period of time; and transmitting a second signal to the implantable blood pump to transition the implantable blood pump from the constant speed mode to the artificial pulse mode; operating the implantable blood pump back in the artificial pulse mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable blood pump system, the system comprising:
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an implantable blood pump configured to supplement or replace a pumping function of a heart, the implantable blood pump operable in a first pump speed pattern and a second pump speed pattern; a controller coupled with the implantable blood pump and configured to receive a first input, and in response to receiving the first input, to transmit a signal to the implantable blood pump to transition from operating in the first pump speed pattern to operating in the second speed pattern; wherein the first input is indicative of a low power condition of the implantable blood pump system; wherein the second pattern is a constant speed mode. - View Dependent Claims (11, 12, 13, 16)
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14. An implantable blood pump system, the system comprising:
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an implantable blood pump configured to supplement or replace a pumping function of a heart, the implantable blood pump operable in a first pump speed pattern and a second pump speed pattern; a controller coupled with the implantable blood pump and configured to receive a first input, and in response to receiving the first input, to transmit a signal to the implantable blood pump to transition from operating in the first pump speed pattern to operating in the second speed pattern; wherein the controller is further configured to receive a second input, and in response to the second input, to transmit a signal to the implantable blood pump to transition from operating in the second pump speed pattern to operating in the first pump speed pattern; wherein the first pump speed pattern comprises an artificial pulse mode and the second pump speed pattern comprises a constant speed mode. - View Dependent Claims (15, 17)
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18. An implantable blood pump system, the system comprising:
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an implantable blood pump configured to supplement or replace a pumping function of a heart, the implantable blood pump operable in a first pump speed pattern and a second pump speed pattern; a controller coupled with the implantable blood pump and configured to receive a first input, and in response to receiving the first input, to transmit a signal to the implantable blood pump to transition from operating in the first pump speed pattern to operating in the second speed pattern; wherein the controller is further configured to receive a second input, and in response to the second input, to transmit a signal to the implantable blood pump to transition from operating in the second pump speed pattern to operating in the first pump speed pattern; wherein the first and second inputs are user commands. - View Dependent Claims (19, 20, 21)
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22. An implantable blood pump system, the system comprising:
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an implantable blood pump configured to supplement or replace a pumping function of a heart, the implantable blood pump operable in a first pump speed pattern and a second pump speed pattern; a controller coupled with the implantable blood pump and configured to receive a first input, and in response to receiving the first input, to transmit a signal to the implantable blood pump to transition from operating in the first pump speed pattern to operating in the second speed pattern; wherein the first input is a user or clinician command; wherein the second speed pattern is a constant speed mode. - View Dependent Claims (23, 24, 25)
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Specification