noun
heart-lung machine; cardiopulmonary bypass; CPB pump
Medical device used during open-heart surgery to temporarily take over the function of the heart and lungs.
人工心肺を使って心臓の手術を行った。
They performed heart surgery using a heart-lung machine.
Compound of 人工 (artificial) and 心肺 (heart and lungs), directly describing the device's function.