Blood oxygenator

An oxygenator, comprising:

• a housing defining an interior, the interior including a gas exchange chamber and a gas-and-heat exchange chamber,
• a partition between the gas exchange chamber and the gas-and-heat exchange chamber;
• a plurality of gas exchange fibers within the gas exchange chamber;
• a plurality of gas exchange fibers within the gas-and-heat exchange chamber;
• and
• a plurality of heat exchange fibers arranged in the gas-and-heat exchange chamber.

An oxygenator, comprising:

• a housing including a first side, a second side opposite the first side, a third side extending between the first side and the second side, and a fourth side extending between the first side and the second side, and opposite the third side, the housing defining an interior;
• a plurality of gas exchange fibers within the interior of the housing, the plurality of gas exchange fibers extending between the first side and the second side with gas outflow from the plurality of gas exchange fibers along the second side;
• a plurality of heat exchange fibers within the interior of the housing;
• a gas exchange fluid inlet in fluid communication with the plurality of gas exchange fibers;
• a gas exchange fluid outlet in fluid communication with the plurality of gas exchange fibers;
• a heat exchange fluid inlet in fluid communication with the heat exchange fibers;
• and
• a heat exchange fluid outlet in fluid communication with the heat exchange fibers;
• wherein the second side includes an insulating fluid barrier chamber configured to be filled with a flowing heat exchange fluid from the heat exchange fluid inlet.

An oxygenator, comprising:

• a housing defining an interior;
• a plurality gas exchange fibers within in the interior;
• the plurality of gas exchange fibers including one or more layers of gas exchange fibers extending in a first direction and one or more layers of gas exchange fibers extending in a second direction, the second direction being generally orthogonal to the first direction;
• a gas exchange fluid inlet;
• a gas exchange fluid outlet;
• and
• a gas exchange fluid pathway for passing a gas from the gas exchange fluid inlet, through the plurality of gas exchange fibers to oxygenate blood within the interior of the housing, to the gas exchange fluid outlet;
• wherein a first velocity of a gas exchange fluid flowing through the one or more layers of gas exchange fibers extending in the first direction is greater than a second velocity of the gas exchange fluid flowing through the one or more layers of gas exchange fibers extending in the second direction.