Pump motor control with adaptive startup

Patent metadata

Field	Value
Publication number	US-10732583-B2
Application number	US-201615391997-A
Country	US
Kind code	B2
Filing date	Dec 28, 2016
Priority date	Dec 28, 2015
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

An apparatus for starting operation of a motor of an implantable blood pump including a memory storing one or more default parameters for at least one of controlling and monitoring the startup operation. A processor operatively coupled to the motor is included, the processor is configured to: commence the startup operation based on the one or more default parameters; detect an error during the startup operation; adjust at least one of the one or more default parameters in response to the detected error; store the at least one adjusted parameter in the memory; and commence subsequent startup operations based at least in part on the at least one adjusted parameter.

First claim

What is claimed is:

1. An apparatus for starting operation of a motor of an implantable blood pump, comprising:
a memory storing one or more default parameters for controlling or monitoring the startup operation; and
a processor operatively coupled to the motor, the processor being configured to:
commence the startup operation based on the one or more default parameters, the one or more default parameters includes a value indicating a threshold number of errors,
ramp a speed of the motor based on at least one of the one or more default parameters, and phase lock the motor based on at least one of the one or more default parameters;
detect an error during the startup operation, the error being at least one of a failure to start the motor based on a plurality of pulses associated with a physiological state of a patient, a determined speed of the motor, current supplied to the motor, flow rate of blood through the pump, and pressure head exerted by the pump;
adjust at least one of the one or more default parameters in response to the detected error;
store the at least one adjusted parameter in the memory;
commence subsequent startup operations based at least in part on the at least one adjusted parameter;
cease operation of the motor in response to registering the threshold number of errors during consecutive startup operation attempts; and
the memory being further configured to store parameter adjustment data indicating an association between at least one error type of the detected error and at least one associated parameter, the processor is further configured to identify at least one default parameter associated with the detected error based on the parameter adjustment data and to adjust the at least one default parameter in response to the detected error.

Assignees

• Heartware Inc
• Heartwave Inc

Inventors

• Rudser John

Classifications

• A61M60/422

  the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps · CPC title

• A61M60/237

  the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps · CPC title

• A61M60/232

  Centrifugal pumps · CPC title

• A61M60/178

  drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices · CPC title

• A61M60/411

  generated by an electromotor · CPC title