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PERITONEAL DIALYSIS SYSTEM

  • US 20110060273A1
  • Filed: 09/01/2010
  • Published: 03/10/2011
  • Est. Priority Date: 09/08/2009
  • Status: Active Grant
First Claim
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1. A dialysate regeneration system for removing contaminants from spent dialysate comprising:

  • a) a dialysate circulation flow path including;

    i) a pump that pumps spent dialysate through the dialysate circulation flow path;

    ii) a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet; and

    iii) a second cartridge adapted to remove urea from the spent dialysate, the second cartridge including semi-permeable hollow fibers adapted for transport of urea across the walls of the semi-permeable hollow fibers and adapted to retain at least calcium, magnesium, and sodium ions in the dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet;

    b) a first dialysate cleaning flow path including a pump that pumps first cleaning solution from the first cleaning solution outlet of the first cartridge through a first cleaning stage to the first cleaning solution inlet of the first cartridge; and

    c) a second dialysate cleaning flow path including a pump that pumps second cleaning solution from the second cleaning solution outlet of the second cartridge through a second cleaning stage to the second cleaning solution inlet of the second cartridge.

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