Method for fabricating wound hollow fiber dialysis cartridges
US4252765A · kind A · utility
Inventor
Key dates
| Filing date | Jan 16, 1980 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Jan 16, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D63/022
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the manufacture of wound hollow fiber dialysis cartridges, rigid preliminary tube sheets are formed near each end of the winding, outwardly of the area of the winding which will ultimately be used in finished cartridges. The preliminary tube sheets are then cut transversely to the winding mandrel to expose the hollow fiber ends. The cut preliminary tube sheets, mandrel, and fibers now form a unitary structure which can be washed and treated to make the fiber surface easily adherable to the potting material from which the permanent tube sheets are thereafter formed. After forming the permanent tube sheet, the winding is cut into individual cartridges, and the preliminary tube sheets are discarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.