| 摘要 |
<p>A percutaneous oxygenator (10) has a Y-shaped tubular connector (12) and a number of hollow, gas-permeable fibers (14). One end of each fiber is located in the first upper arm (22) of the connector. The other end of each fiber is located in the other upper arm (24) of the connector, with each fiber forming a loop extending out of the lower opening of the connector. The device is inserted through a single small incision into the patient's venous system. An oxygen supply is attached to one of the upper arms of the connector. Oxygen flows through the hollow fibers and diffuses through the fiber wall into the blood. Carbon dioxide diffuses across the fiber wall from the blood into the interior of the fiber tubes. This carbon dioxide and any remaining oxygen exit the fibers and are vented to the atmosphere at the second upper arm of the connector.</p> |
