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WEARABLE CONTINUOUS RENAL REPLACEMENT THERAPY DEVICE

  • US 20080058696A1
  • Filed: 11/01/2007
  • Published: 03/06/2008
  • Est. Priority Date: 11/16/2001
  • Status: Active Grant
First Claim
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1. A continuous renal replacement therapy (CRRT) device comprising:

  • means for enabling a patient to wear the entire CRRT device;

    a battery powered microcontroller;

    a blood circuit including a blood inlet tube for receiving blood from a patient, the blood circuit including;

    a first, battery powered pump channel, controlled by the microcontroller for pumping blood in a pulsatile manner through the blood circuit;

    a first micropump for pumping an anticoagulant into the blood circuit;

    a dialyzer for receiving blood pumped by the first pump channel;

    a pressure transducer for providing a blood circuit pressure signal to the microcontroller;

    an outlet port for allowing blood to go back into the patient after being received by the dialyzer; and

    a dialysate circuit for circulating dialysate through the dialyzer and for removing contaminants from the circulating dialysate, the dialysate circuit comprising;

    a second, battery powered pump channel, controlled by the microcontroller, for pumping dialysate in a pulsatile manner at a flow rate between 40 ml/min and 100 ml/min through the dialysate circuit;

    a filter section for reacting with predetermined substances in the dialysate in order to refresh the dialysate for continued usage in the dialysate circuit;

    a sensor, attached to the dialysate circuit, for providing a signal to the microcontroller indicating that the filter section requires maintenance;

    a degasser, attached to the dialysate circuit, for removing gas from the dialysate circuit; and

    wherein the microcontroller, blood circuit and dialysate circuit are operably interconnected to provide continuous renal replacement therapy while the CRRT device is worn by a patient.

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