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Renal therapy system with cassette-based blood and dialysate pumping

DC
  • US 10,155,080 B2
  • Filed: 02/05/2018
  • Issued: 12/18/2018
  • Est. Priority Date: 11/05/2003
  • Status: Active Grant
First Claim
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1. A renal therapy system comprising:

  • a peristaltic blood pump actuator;

    a peristaltic dialysis fluid pump actuator;

    a dialysis fluid heater;

    a dialyzer; and

    a disposable unit includinga blood cassette portion including a blood cassette housing and configured to be operatively connected to the peristaltic blood pump actuator to pump blood through the blood cassette portion when the blood cassette portion is in fluid communication with a blood source, the blood cassette portion in fluid communication with the dialyzer and including an air separation chamber for separating air from the pumped blood,a dialysis fluid cassette portion including a dialysis fluid cassette housing separate from the blood cassette housing and configured to be operatively connected to the peristaltic dialysis fluid pump actuator to pump dialysis fluid through the dialysis fluid cassette portion when the dialysis fluid cassette portion is in fluid communication with a dialysis fluid source, the dialysis fluid cassette portion in fluid communication with the dialyzer, anda heater bag configured to be placed in operable communication with the dialysis fluid heater and in fluid communication with the dialysis fluid cassette portion via a to-heater tube and a from-heater tube, wherein the heater bag is spaceable away from the dialysis fluid cassette portion, and wherein the dialysis fluid heater is spaced away from the peristaltic dialysis fluid pump actuator so that the heater bag is placeable in operable communication with the dialysis fluid heater while the dialysis fluid cassette portion is operably connected to the peristaltic dialysis fluid pump actuator.

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