Specialized hollow fiber membranes for in-vivo plasmapheresis and ultrafiltration
US6802820B1 · kind B1 · utility
12Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2000 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/022
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An in-vivo plasmapheresis and/or in-vivo ultrafiltration membrane comprises a plurality of elongated hollow fibers each fiber having an interior lumen extending along the fiber length, the fiber wall having a plurality of zones between the inner and outer wall surfaces, each of the zones having a mass density different than the mass density of an adjacent zone. The fiber wall is characterized by having a lower mass density zone at the inner wall surface and a higher mass density zone at the outer wall surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.