Leak prevention in blood oxygenators

Details Leak prevention in blood oxygenators Leak prevention in blood oxygenators

1996-01-16

1998-02-17

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Blood treating device for transfusible blood

Oxygenator

165158, A61M 114, F28F 902

Patent

active

057188718

ABSTRACT:
A tight seal is achieved in a blood oxygenator between the potting of the heat exchanger fibers and the rim of the heat exchanger container by extending the potting material over the rim and down, so that when the potting material shrinks during cure, the potting will become prestressed in the sealing direction against an outwardly facing wall of the container. The invention also provides a ring coextensive with the rim and spaced therefrom. The potting extends into the ring. This forms an air gap between the rim and the ring through which potting can extend. As a result, there is no possible leakage path between the blood and the heat exchange medium. Any leak that does occur discharges to atmosphere outside the container.

REFERENCES:
patent: 4975247 (1990-12-01), Badolato
patent: 5043140 (1991-08-01), Combs
patent: 5058661 (1991-10-01), Oshiyama
patent: 5192499 (1993-03-01), Sakai et al.

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