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Sensing and storage system for fluid balance

  • US 10,195,327 B2
  • Filed: 09/12/2017
  • Issued: 02/05/2019
  • Est. Priority Date: 12/10/2014
  • Status: Active Grant
First Claim
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1. A sensing and storage system for fluid balance during dialysis, comprising;

  • a control pump in a dialysate flow loop in fluid communication with a dialyzer, wherein the dialysate flow loop has a controlled volume;

    a fluid removal line fluidly connected to the dialysate flow loop and in communication with the control pump;

    an extracorporeal flow loop in fluid communication with the dialysate flow loop across a semi-permeable membrane in the dialyzer;

    an inflow sensor in the dialysate flow loop and positioned in the dialysate flow loop at a position before the dialyzer;

    an outflow sensor in the dialysate flow loop and positioned in the dialysate flow loop at a position after the dialyzer;

    a sensor line having a first end positioned in the dialysate flow loop after the inflow sensor and before the dialyzer and a second end positioned after the outflow sensor wherein the sensor line has one or more additional sensors positioned on the sensor line; and

    a control system configured to receive data from the inflow sensor and the outflow sensor;

    wherein said control system is configured to electronically communicate with the control pump, wherein the control system is configured to utilize a fluid balancing system configured to automatically adjust a pump rate of the control pump based on a difference between the flow measured at inflow sensor and outflow sensor to maintain a controlled volume in the dialysate flow loop.

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