Generating artificial pulse

摘要

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.

主权项

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.