Coriolis mass flow meter

The invention relates to a Coriolis mass flow meter (1), comprising: at least one first oscillating measuring tube (10) for conducting a medium; at least one support body (46) to which the at least one first measuring tube (10) is connected on the inlet side and on the outlet side; at least one exciter (30) for exciting at least one bending vibration mode of the at least one first measuring tube; at least two vibration sensors (31, 32) for detecting vibrations of the at least one first measuring tube (10); and at least one first reinforcing body (20) which is fastened to a lateral surface of the at least one first measuring tube (10) and surrounds the at least one first measuring tube (10), the at least one first reinforcing body (20) having a spiral path with a plurality of windings at least in a plurality of sections, the distance between two adjacent windings of the reinforcing body (20) is not less than two times, for example, not less than four times, and in particular not less than eight times, of the m