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Pressure sensing ventricular assist devices and methods of use

  • US 10,835,654 B2
  • Filed: 03/28/2018
  • Issued: 11/17/2020
  • Est. Priority Date: 03/29/2017
  • Status: Active Grant
First Claim
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1. A blood pump system, the system comprising:

  • a blood pump comprising an inflow and an outflow,a pressure sensor coupled with the outflow or the inflow of the blood pump;

    a controller operably coupled with the blood pump and the pressure sensor, the controller configured to;

    determine a differential pressure across the blood pump based on a rotor drive current signal configured to drive the blood pump;

    calculate, with the differential pressure across the blood pump;

         1) a pressure at the inflow of the blood pump when the pressure sensor is at the outflow, or

         2) a pressure at the outflow of the blood pump when the pressure sensor is at the inflow; and

    generate a desired data waveform from the calculated pressure.

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