Blood oxygenator with heat exchanger

摘要

A generally cylindrical membrane-type fiber bundle blood oxygenator 10 concentrically surrounds a generally cylindrical blood heat exchanger. Heat transfer fluid flows downwardly from the upper end of the heat exchanger around outside surfaces of the fiber bundle 26. A blood inlet manifold 18 at the lower end of the heat exchanger includes an inlet nozzle 30 and a generally conical wall 60. A transition manifold 24 at the upper end of the heat exchanger directs blood to the upper end of the oxygenator fiber bundle 28. The transition manifold 24 includes a generally conical wall 96 defining a surface which spreads the blood substantially uniformly around the upper portion of the fiber bundle 28. The blood flows downwardly around outside surfaces of the fiber bundle 28 to a blood outlet manifold that collects the oxygenated blood. The blood outlet manifold comprises an annular blood collection chamber 110. A blood outlet nozzle 32 extends from the annular blood collection chamber 110.