Hollow fiber membrane type artificial lung

Abstract

A hollow fiber membrane type artificial lung comprising a hollow fiber bundle composed of multiple porous hollow fiber membranes (8) arranged in one direction; a heat exchange pipe bundle composed of multiple heat exchange pipes (9) arranged in one direction across the hollow fiber membranes and piled one upon another, the heat exchange pipe bundle disposed in parallel to the hollow fiber bundle; and potting materials (10) charged over regions including both end portions of the hollow fiber membranes and heat exchange pipes, which potting materials define a blood flow channel extending across the hollow fiber membranes and heat exchange pipes. Further, there is provided a housing comprising blood ports (3a,3b) facing both ends of the blood flow channel; gas headers (4a,4b) facing both ends of the hollow fiber membranes and providing gas ports (5a,5b); and heat exchange headers (6a,6b) facing both ends of the heat exchange pipe bundle and providing heat exchange liquid ports (7a,7b). Blood is caused to flow through the blood flow channel, and an oxygen-containing gas is passed through the cavity of the hollow fiber membranes to thereby carry out gas exchange. A heat exchange liquid is passed through the cavity of the heat exchange pipes to thereby carry out heat exchange. There can be provided a hollow fiber membrane type artificial lung having a heat exchange part annexed to a gas exchange part without any superfluous increase of charged blood quantity.

Description

[0001] technical area [0002] The present invention relates to a hollow fiber membrane-type artificial lung using hollow fiber membranes for gas exchange, and more particularly, to a hollow fiber having a structure in which heat exchange tube bundles are stacked on the hollow fiber bundles to perform heat exchange at the same time as gas exchange. Membrane artificial lung. Background technique [0003] It is known that artificial lungs capable of making blood flow perpendicular to the hollow fiber membrane can achieve efficient gas exchange and lower pressure loss by effectively destroying the resistance of the blood side layer membrane, and are highly efficient in terms of basic performance. Furthermore, by stacking the heat exchange tube bundles on the hollow fiber bundles, the heat exchange is performed simultaneously with the gas exchange, so that the operation for maintaining the blood temperature within an appropriate range can be efficiently performed. Refer to the fo...

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Problems solved by technology

Due to such dead spaces, the blood fill volume is uselessly increased

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