Nanoclay sorbents for dialysis
US9821105B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 1, 2008 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1017
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Dialysis is enhanced by using nanoclay sorbents to better absorb body wastes in a flow-through system. The nanoclay sorbents, using montmorillonite, bentonite, and other clays, absorb significantly more ammonium, phosphate, and creatinine, and the like, than conventional sorbents. The montmorillonite, the bentonite, and the other clays may be used in wearable systems, such as a wearable peritoneal dialysis system, in which a dialysis fluid is circulated through a filter with the nanoclay sorbents. Waste products are absorbed by the montmorillonite, the bentonite, and the other clays and the dialysis fluid is recycled to a patient's peritoneum. Using an ion-exchange capability of the montmorillonite, the bentonite, and the other clays, waste ions in the dialysis fluid are replaced with desirable ions, such as calcium, magnesium, and bicarbonate. The nanoclay sorbents are also useful for refreshing a dialysis fluid used in hemodialysis and thus reducing a quantity of the dialysis fluid needed for the hemodialysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.