Surface treatment for blood dialysis cartridges
US4211602A · kind A · utility
7Cited by
5References
7Claims
0Family size
Inventor
Key dates
| Filing date | May 4, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | May 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In blood dialyzers in which hollow fibers are potted in plastic tube sheets and the tube sheets are then cut to form a manifold surface providing access to the interior of the hollow fibers, blood clotting at the manifold surface is greatly reduced by treating the surface to increase the radii of the microscopic sharp edges of the fiber ends which are produced by the cutting process. The smoothing of the fiber ends can be accomplished by momentary heating, flame polishing, etching, or coating of the manifold surface with a varnish.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.