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 perturbation mode;
operating the implantable blood pump in the perturbation mode for a second period of time;
transmitting a second signal to the implantable blood pump to transition the implantable blood pump from the perturbation mode to the artificial pulse mode; and
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.
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Citations
20 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 perturbation mode; operating the implantable blood pump in the perturbation mode for a second period of time; transmitting a second signal to the implantable blood pump to transition the implantable blood pump from the perturbation mode to the artificial pulse mode; and 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 replace or partially assist a blood circulation function of a heart, the implantable blood pump operable in an artificial pulse mode and a perturbation mode; and a controller coupled with the implantable blood pump and configured to transmit a first signal to the implantable blood pump to transition from operating in the artificial pulse mode to operating in the perturbation mode; wherein the controller is further configured to transmit a second signal to the implantable blood pump to transition from operating in the perturbation mode to operating in the artificial pulse mode. - View Dependent Claims (11, 12, 13, 14)
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15. A blood pump controller comprising:
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a waveform generator to generate a waveform for operating a blood pump; and a drive waveform transmitter to supply the generated waveform to the blood pump; wherein the generated waveform is configured to; operate a blood pump in an artificial pulse mode for a first period of time; and operate the blood pump in a perturbation mode for a second period of time. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification