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US 9,867,918 B2Granted
Cartridges useful in cleaning dialysis solutions
AssigneeFresenius Medical Care Holdings, Inc.
InventorsStephen A. Merchant, Kerissa Adams
Life of this patent
Estimating the term…
Abstract
Cartridges useful in regenerating or purifying dialysis solutions are described as well as methods to regenerate or purify spent dialysis solutions. Dialysis methods using the sorbent cartridges of the present invention are further described.
Claims60
A sorbent cartridge, comprising from inlet to outlet:
- a) a first carbon-containing layer;
- b) an enzyme-comprising layer that follows the first carbon-containing layer within the sorbent cartridge;
- c) a second carbon-containing layer that follows the enzyme-comprising layer within the sorbent cartridge;
- d) a zirconium phosphate-containing layer that follows the second carbon-containing layer within the sorbent cartridge;
- e) a hydrous zirconium oxide layer that follows the zirconium phosphate-containing layer comprising hydrous zirconium oxide-chloride having an alkaline pH;
- and
- f) a (bi)carbonate layer that follows the hydrous zirconium oxide layer comprising sodium (bi)carbonate.
4 more elements
A sorbent cartridge comprising from inlet to outlet:
- a) a first carbon-containing layer;
- b) an enzyme-comprising layer that follows the first carbon-containing layer within the sorbent cartridge;
- c) a second carbon-containing layer that follows the enzyme-comprising layer within the sorbent cartridge;
- d) a zirconium phosphate-containing layer that follows the second carbon-containing layer within the sorbent cartridge, wherein the zirconium phosphate-containing layer comprises sodium loading of greater than 55 mg Na/g zirconium phosphate;
- e) a hydrous zirconium oxide layer that follows the zirconium phosphate-containing layer comprising hydrous zirconium oxide-chloride having an alkaline pH;
- and
- f) a (bi)carbonate layer that follows the hydrous zirconium oxide layer comprising sodium (bi)carbonate.
4 more elements
Dependencies are inferred from the claim text.