<p>The device has two hinge regions arranged together and partially formed by circular projections (12). The projections are projected from a base body (17) of segments (10) and supported in a support (13) of an adjacent segment. The projections are connected with the base body of the segments by a material bridge (16), which completely lies within quadrants (18). The quadrants are defined from a middle point (M) of the projection through a parallel line to a longitudinal axis and to a normal (N) from the line. The projections are gripped along axial direction of the support of the segments. Independent claims are also included for the following: (1) a medical instrument comprising a bending device (2) a method for manufacturing a bending device.</p>
