System and method to efficiently clean a blood filter
US11419967B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 4, 2019 |
| Grant date | Aug 23, 2022 |
| Priority date | — |
| Expiry date | Jun 25, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A renal therapy apparatus includes a blood filter, a blood pump, a treatment fluid pump, and a control unit configured to control at least one of the blood pump or the treatment fluid pump during a filter cleaning sequence. The blood filter includes a plurality of hollow fiber membranes. During the filter cleaning sequence, a fluid mixture is formed by mixing air with a blood-compatible and physiologically safe fluid. Also during the filter cleaning sequence, the fluid mixture is transferred across insides and/or outsides of the plurality of hollow fiber membranes at least one time. The use of the fluid mixture enables the filter cleaning sequence to be performed during the blood treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.