Intravascular lung assist device and method

Details Intravascular lung assist device and method Intravascular lung assist device and method

1990-05-21

1991-08-06

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Gas application

604 49, A61M 3700

Patent

active

050373838

ABSTRACT:
An elongated, radially-expandable, intravascular lung assist device is formed by first stretching an elastomeric tubular core, then arranging a plurality of axially-spaced bundles of straight, flexible, hollow fibers formed of gas-permeable material around said core and securing the end portions of each bundle to the core while it is in stretched condition, and then relieving the stretching forces on said core to cause said fibers of each bundle to flex outwardly and form a rosette of outwardly-arched fibers. The core has at least two longitudinal gas-flow passages with lateral openings located at spaced intervals which communicate through manifold chambers at the ends of the bundles for the circulation of gases through the fibers. In use of the device, the core is stretched longitudinally to straighten the bowed fibers and, following insertion of the device into the lumen of a blood vessel, such stretching forces are relieved to allow the bundles to expand radially in situ.

REFERENCES:
patent: 3505686 (1970-04-01), Bodell
patent: 4583969 (1986-04-01), Mortensen
patent: 4631053 (1986-12-01), Taheri

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