Cylindrical blood heater/oxygenator
AssigneeMinntech Corporation
InventorsLouis C. Cosentino, Jeffrey A. Lee, Daniel A. Baker
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Abstract
A combination heat exchanger and oxygenator device is provided. The device includes a generally cylindrical housing having first and second compartments with hollow heat exchange tubes and hollow gas exchange tubes disposed therein, a blood inlet, a blood outlet, a heat exchanges medium inlet, a heat exchange medium outlet, an oxygenating fluid inlet and an oxygenating fluid outlet. The housing has a central axis with the second compartment being concentric thereto. The blood flow passage is defined by blood entering the device generally axially through a path extending along the central axis of the housing and flows generally radially through the second, oxygenating compartment.
Claims15
A combination heat exchanger and oxygenator device comprising:
- a housing including structure defining first and second compartments, a blood inlet, a blood outlet, a heat exchange medium inlet, a heat exchange medium outlet, an oxygenating fluid inlet and an oxygenating fluid outlet, said housing having a central axis, said second compartment being concentric to said axis;
- structure defining a flow passage for blood through said housing from said blood inlet to said blood outlet;
- structure defining a flow passage for heat exchange medium from said heat exchange medium inlet to said heat exchange medium outlet;
- structure defining a flow passage for oxygenating fluid from said oxygenating fluid inlet to said oxygenating fluid outlet;
- a plurality of hollow gas exchange tubes disposed in said second compartment;
- said blood flow passage comprising a heat exchange path through said first compartment, said blood flow passage further comprising a central path extending along at least a portion of said central axis of said housing, said blood flow passage further comprising an oxygenating path extending generally radially through said second compartment, around said gas exchange tubes, said central path being upstream of said oxygenating path, whereby blood flows axially along at least a portion of the central axis of said housing and then generally radially through said second compartment.
Dependencies are inferred from the claim text.