| 摘要 |
PROBLEM TO BE SOLVED: To provide an artificial lung in which no blood short circuit path is formed caused by a circulating crossing part of hollow fiber membrane and which has a sufficient gas exchange capability, even if a hollow fiber membrane bundle which is formed by a hollow fiber membrane is spirally wound on the outer surface of a cylindrical core and is provided with the circulating crossing part of hollow fiber membrane are used in the artificial lung. SOLUTION: The hollow fiber membrane type artificial lung 1 is provided with a cylindrical core 5, a cylindrical hollow fiber membrane bundle 3 consisting of a hollow fiber membrane 3a for gas exchange wound on the outer surface of the core 5, a housing for housing the bundle 3, a gas inlet part and outlet part communicating with the inside of the hollow fiber membrane, and a blood inlet part and outlet part communicating with the inside of the housing. The bundle 3 is formed by winding a hollow fiber membrane on the outer peripheral surface of the cylindrical core 5. In this case, a hollow fiber membrane layer spreading over the outer peripheral surface of the cylindrical core by the hollow fiber membrane is in a multilayer state. In the hollow fiber membrane layer, a crossing part in which the hollow fiber membrane crosses and a folded-back part of the hollow fiber membrane in a gas exchange effective part do not exist.
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