Blood oxygenator using a hollow fiber membrane

Details Blood oxygenator using a hollow fiber membrane Blood oxygenator using a hollow fiber membrane

A - Human Necessities

61

M

128/81.2

A61M 1/18 (2006.01) A61M 1/16 (2006.01) B01D 63/02 (2006.01) B01D 63/04 (2006.01)

Patent

CA 1236739

Abstract of the Disclosure The present invention provides 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 means of a 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 semi- permeable 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.

470732

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