Use of optical fiber sensor as a diagnostic tool in catheter-based medical devices
AssigneeABIOMED, Inc.
InventorsRahul Suresh Gandhi, Tao Zhang
Life of this patent
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Abstract
A blood pump system including an optical sensor configured to detect an optical signal during pumping operation of the blood pump, and an optical fiber configured to transmit the optical signal from the optical fiber sensor to an evaluation device communicatively coupled to the optical fiber sensor. The evaluation device is configured to receive as inputs the transmitted optical signal and a signal indicative of the motor current and determine a mechanical failure event associated with the blood pump based on the motor current and the optical signal.
Claims4
A method for operating a catheter-based blood pump system driven by a motor, the blood pump system comprising an inlet cannula and a pump having a rotor in a shroud, comprising the steps of:
- actuating the rotor of the pump by sending electrical current to the rotor from the motor,
- detecting electrical current flowing to and from the motor,
- detecting a vibration of a component of the pump by measuring an optical signal from an optical sensor positioned on a location of the component that contacts blood flowing from the pump, and
- adjusting the electrical current to the motor based on the detected vibration.
Dependencies are inferred from the claim text.