Compact membrane-type blood oxygenator with concentric heat exch

Details Compact membrane-type blood oxygenator with concentric heat exch Compact membrane-type blood oxygenator with concentric heat exch

1996-01-11

1998-10-20

Clarke, Robert A.

Surgery

Blood drawn and replaced or treated and returned to body

422 46, A61M 3700, A61M 114

Patent

active

058239871

ABSTRACT:
A generally cylindrical membrane-type fiber bundle blood oxygenator concentrically surrounds a generally cylindrical blood heat exchanger including a fiber bundle made of thousands of polymer material micro-conduits. A heat transfer fluid such as water is introduced into the upper end of the heat exchanger and flows downwardly around the outside surfaces of the micro-conduits to an outlet. Upper and lower seals of urethane potting compound separate the heat transfer fluid from the open ends of the micro-conduits through which blood flows. A transition manifold at the upper end of the heat exchanger directs out flowing blood radially outwardly to the upper end of the oxygenator fiber bundle. The blood flows downwardly around the outside surfaces of the fibers of the oxygenator fiber bundle to a blood outlet manifold that collects the oxygenated blood. Upper and lower seals made of urethane potting compound separate the blood flowing around the fibers of the oxygenator fiber bundle from a gas mixture flowing into and out of the open ends of the fibers through upper and lower venous gas headers.

REFERENCES:
patent: 4196075 (1980-04-01), Bentley
patent: 4622206 (1986-11-01), Torgeson
patent: 4975247 (1990-12-01), Badolato et al.
patent: 5192499 (1993-03-01), Sakai et al.
patent: 5234663 (1993-08-01), Jones et al.
patent: 5266265 (1993-11-01), Raible
patent: 5270004 (1993-12-01), Cosentino et al.
Maxima Hollow Fiber Membrane Oxgenator -- four page brochure .COPYRGT.1994.
Minimax Plus Oxgenation Systems -- five page brochure .COPYRGT.1994.

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