Medical apparatus for the extracorporeal treatment of blood or plasma, and processes for using this apparatus
US6248238A · kind A · utility
46Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1997 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A medical apparatus for the extracorporeal treatment of blood or plasma comprises a semi-permeable membrane consisting of at least one electronegative polymer, such that the surface of the semi-permeable membrane has negative electric charges. Before the sterilization of the apparatus, and before or after the formation of the membrane, at least one cationic and anti-protease agent is incorporated in at least one part of the membrane, this agent undergoing bulk adsorption or semi-bulk adsorption in the membrane and/or being bound by an ionic interaction with the electronegative sites of the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.