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DIALYSIS TREATMENT DEVICES FOR REMOVING UREA

  • US 20140251908A1
  • Filed: 05/20/2014
  • Published: 09/11/2014
  • Est. Priority Date: 06/11/2009
  • Status: Active Grant
First Claim
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1. A method for removing urea from a dialysis fluid, the method comprising:

  • circulating the dialysis fluid in a fluid circuit that includes a dialysis apparatus having cartridge comprising

         1) a first filter comprising a filtration membrane,

         2) a urea removal unit comprising urease and in fluid communication with a filtrate stream of the first filter,

         3) a second filter comprising an ion rejection membrane and receiving at least one of the filtrate stream of the first filter and a filtrate stream of the urea removal unit, and

         4) a flow restrictor positioned between the first filter and the second filter;

    removing urea from the dialysis fluid with the cartridge; and

    recirculating a filtrate stream of the second filter back to patient.

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