Cardiac Pump With Speed Adapted for Ventricle Unloading
AssigneeTc1 LLC
InventorsAlexander Medvedev, Masamichi Yanai
Life of this patent
Estimating the term…
Abstract
A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase.
Claims21
(canceled)
A blood pump device, comprising:
- a pumping chamber having an inlet for receiving blood from a ventricle of a user;
- an impeller received in the pumping chamber;
- a motor coupled to the impeller for driving rotation of the impeller;
- and
- controller that is configured to:
- determine a timing of a cardiac cycle of the user;
- and
- vary a speed of the motor based on the timing of the cardiac cycle of the user such that:
- a speed of the motor begins ramping down during a systolic phase of a cardiac cycle:
- and
- the speed of the motor begins ramping up during a diastolic phase of the cardiac cycle.
A method of operating a blood pump device, comprising:
- determining a timing of a cardiac cycle of a user;
- and
- varying a speed of a motor of the blood pump device based on the timing of the cardiac cycle of the user such that:
- a speed of the motor begins ramping down during a systolic phase of a cardiac cycle:
- and
- the speed of the motor begins ramping up during a diastolic phase of the cardiac cycle.
A non-transitory machine readable medium having instructions stored thereon, wherein the instructions are executable by one or more processors to at least:
- determine a timing of a cardiac cycle of a user;
- and
- vary a speed of a motor of a blood pump device based on the timing of the cardiac cycle of the user such that:
- a speed of the motor begins ramping down during a systolic phase of a cardiac cycle:
- and
- the speed of the motor begins ramping up during a diastolic phase of the cardiac cycle.
Dependencies are inferred from the claim text.