Norma J. Ofsthun,Harold F. Sandford,Amanda K. Stennett,Jiunn Yeong Teo,Cheryl Ford,Benjamin J. Lipps,Michael James Beiriger
申请号：
US12873875
公开号：
US09078969B2
申请日:
2010.09.01
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A dialysate regeneration system for removing contaminants from spent dialysate according to this invention includes a dialysate circulation flow path including a pump that pumps spent dialysate through the dialysate circulation flow path, a first cartridge adapted to remove contaminants from the spent dialysate, including a first cleaning solution inlet and a first cleaning solution outlet, 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 spent dialysate, and including a second cleaning solution inlet and a second cleaning solution outlet. Ancillary to the two cartridges, the dialysate regeneration system further includes 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 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.
