A blood pump (1) for supporting a patient's heart comprises a flow cannula (4) having a distal end (10) and a proximal end (11) opposite the distal end (10), wherein the distal end (10) of the flow cannula (4) is configured to be connected to the patient's heart or a blood vessel in order to establish a fluid communication between the blood pump (1) and the patient's heart and blood vessel, respectively. The flow cannula (4) comprises a distal portion (5) having said distal end (10) and a proximal portion (6) having said proximal end (11). The flow cannula (4) further comprises an intermediate portion (7) attached to the distal portion (5) and the proximal portion (6), wherein the intermediate portion (7) allows clamping and twisting thereof with a lower force than the distal portion (5) and the proximal portion (6). At least a portion of the intermediate portion (7) either alone or in combination with the distal portion (5) is adapted to be permanently attached to the patient's heart or a blood vessel.
