Blood oxygenator using a hollow fiber membrane
US4659549A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1984 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Dec 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/03
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A blood oxygenator comprising a housing generally in the form of a box and bundles of hollow fibers of semipermeable membrane set therein for effecting gas exchange therethrough. In this blood oxygenator, each end of each bundle of hollow fibers of semipermeable membrane is secured together by potting material in such a way as to allow their open ends to communicate separately with a gas inlet and a gas outlet; the space around the bundles of hollow fibers of semipermeable membrane communicates with a blood inlet and a blood outlet; the blood-gas contact chamber within the housing is divided into a plurality of compartments with the interposition of blood flow channels narrowed by baffles; and the bundle of hollow fibers of semipermeable membrane is disposed in the contact chamber so as to be substantially parallel to the baffles. This blood oxygenator has high oxygen and carbon dioxide exchange rates per unit area of membrane, causes little channeling of the blood and gas, exhibits only a small pressure loss in the flow of blood, and is easy to manufacture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.