Patent ID: 7641853

Claim:
An intravenous oxygenator for enriching blood with oxygen, said oxygenator having a twisted first bundle of fibers allowing through flow of oxygen and carbon dioxide therealong, said fibers being each connected to a gas supply means through a first connection and to a gas evacuation means through a second connection so that oxygen and carbon dioxide are allowed to flow through the fibers from the first connections to the second connections, the fiber bundle being twisted by relative rotation of the first connections of the fibers relative to the second connections of the fibers about a longitudinal axis of the oxygenator, wherein the oxygenator comprises a neighboring bundle of fibers, which is axially disposed in relation to the first bundle of fibers along the longitudinal axis of the oxygenator, both said bundles of fibers each having connection pairs, so that the second connection of the first bundle of fibers is the first connection of the neighboring bundle of fibers, whereas the first connection of the first bundle of fibers is arranged axially distant from the second connection of the neighboring bundle of fibers, and both bundles of fibers being twisted in the same direction, and being positioned axially between the first connection of the first bundle of fibers and the second connection of the neighboring bundle of fibers.