Sorbent for a dialysis device and dialysis system
US11458235B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 5, 2017 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | May 2, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2220/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a sorbent for removing metabolic waste products from a dialysis liquid, the sorbent comprising a soluble source of sodium ions. The sorbent comprises an ion exchange system which converts urea to ammonium ions and which is configured to exchange ammonium ions for predominantly hydrogen ions and to exchange Ca, Mg, and K for predominantly sodium ions. The soluble source of sodium ions overcomes an initial drop in sodium concentration in regenerated dialysate. When used in conjunction with an infusion system configured to utilise exchange of Ca, Mg and K for sodium during dialysate regeneration a desired sodium ion concentration can be maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.