heat exchanger and oxygenator integrated with a heat exchanger. The present invention relates to a heat exchanger including a heat exchanger housing, a lower member (90b) coupled to one end of the heat exchanger housing and a plurality of heat transfer tubes (a group of tubes). 80) charged within the heat exchanger housing, in which blood flows from one end through the lower component (90b). the lower member 90b has a circular wall 93, a lower surface 96 and a blood inlet port 98. surface 96 is opposite one end of the heat transfer tube. the bottom surface (96) includes a grooved portion (96c) and a raised lower portion (96a, 96b) provided over each of the opposite side ends of the grooved portion (96c). the raised lower portion (96a, 96b) is inclined such that a distance (h2) between the raised lower portion (96a, 96b) on one side where the blood inlet port (98) is provided and one end of the transfer tube The heat exchanger is less than the distance (h1) between the raised lower portion 96a, 96b opposite the side where the blood inlet port 98 is provided and one end of the heat transfer tube. Blood flow to each heat transfer tube (tube group 80) becomes uniform and high heat exchange performance can be obtained.trocador de calor e oxigenador integrado a um trocador de calor. a presente invenção refere-se a um trocador de calor que inclui um alojamento de trocador de calor, um componente inferior (90b) acoplado a uma extremidade do alojamento do trocador de calor e uma pluralidade de tubos de transferência de calor (um grupo de tubos 80) carregada no interior do alojamento do trocador de calor, no qual o sangue flui de uma extremidade através do componente inferior (90b). o componente inferior (90b) tem uma parede circular (93), uma superfície inferior (96) e um orifício de entrada de sangue (98). a superfície (96) é oposta a uma extremidade do tubo de transferência de calor. a superfície inferior (96) inclui uma porção sulcada (96c) e uma porção inferior elevada (
