Transition manifold for blood oxygenator apparatus

Details Transition manifold for blood oxygenator apparatus Transition manifold for blood oxygenator apparatus

1996-01-11

1999-01-12

Kim, John

Liquid purification or separation

Filter

Prefilt flow distributor or diverter

210477, 422 45, B01D 6100, A61M 114

Patent

active

058582339

ABSTRACT:
A transition manifold is provided for use in association with the upper end of a generally cylindrical heat exchanger fiber bundle having a plurality of vertically extending conduits with open upper ends terminating in substantially co-planar fashion. The transition manifold is specially configured for redirecting blood flowing out of the upper end of the heat exchanger fiber bundle radially outwardly around the fibers of a concentric, surrounding oxygenator fiber bundle. The transition manifold includes a generally conical wall member defining a surface which extends at a relatively flat angle with respect to a plane perpendicular to a vertical central axis of the heat exchanger fiber bundle. The surface of the conical wall member diverges away from the upper end of the heat exchanger fiber bundle in a direction moving radially outwardly from the central axis. The transition manifold spreads the blood substantially uniformally around an upper portion of the generally cylindrical oxygenator fiber bundle while minimizing shear forces that traumatize blood cells and platelets and minimizing recirculations which can lead to clotting.

REFERENCES:
patent: 2742849 (1956-04-01), Stiglitz
patent: 2784843 (1957-03-01), Braunlich
patent: 3712474 (1973-01-01), Martinez
patent: 4904384 (1990-02-01), Potz
patent: 4964984 (1990-10-01), Reeder et al.
patent: 4975247 (1990-12-01), Badolato et al.
patent: 5076922 (1991-12-01), DeAre
patent: 5188732 (1993-02-01), De Niel et al.
patent: 5304305 (1994-04-01), Lehrer
Maxima Hollow Fiber Membrane Oxygenator--four page brochure (undated) by Medtronic.
Minimax Plus Oxygenation Systems--five page brochure (undated) by Medtronic .

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