The invention relates to a heart pump (6) with a delivery channel and with a delivery device (6b, 6c, 34) for blood, which is arranged in this delivery channel, wherein the delivery channel at least partly runs in a pump tube (6a, 105a). A first sensor device (100, 101, 102) for measuring the oxygen saturation of the blood, is provided on the heart pump, in particular on a wall of the delivery channel, in particular on the pump tube. A control device can also be integrated into the pump. Thereby, additional monitoring and control possibilities result.