A medical cross connector comprising: - a cross strut for connecting two longitudinal rods which can be brought into operative engagement preferably with pedicle screws or similar bone implants, in particular for orientation of vertebrae of a spinal column, and - at least one clamping head being mounted pivotably on the cross strut in an angular bearing and having a trough-shaped rod receptacle and a clamping screw, wherein the clamping screw, when actuated, applies a clamping force to the at least one longitudinal rod inserted into the rod receptacle by means of a clamping tooth mounted pivotably about a pivot axis via a rocker bearing, and at the same time or with a time offset fixes an angular position (α) of the angular bearing between the clamping head and the cross strut, characterized in that the rocker bearing is configured as a floating bearing, wherein the floating bearing permits a pivoting movement and a lateral movement of the pivot axis of the clamping tooth, wherein the lateral movement is generated due to clamping forces between the longitudinal rod and the clamping tooth, which acts in a fixing and/or locking manner on the angular position (α) of the angular bearing between the clamping head and the cross strut by reversing the force flow. - a cross strut for connecting two longitudinal rods which can be brought into operative engagement preferably with pedicle screws or similar bone implants, in particular for orientation of vertebrae of a spinal column, and - at least one clamping head being mounted pivotably on the cross strut in an angular bearing and having a trough-shaped rod receptacle and a clamping screw, wherein the clamping screw, when actuated, applies a clamping force to the at least one longitudinal rod inserted into the rod receptacle by means of a clamping tooth mounted pivotably about a pivot axis via a rocker bearing, and at the same time or with a time offset fixes an angular position (α) of the angular bearing between the clamping head and the cross strut, characterized in that the rocker bearing is configured as a floating bearing, wherein the floating bearing permits a pivoting movement and a lateral movement of the pivot axis of the clamping tooth, wherein the lateral movement is generated due to clamping forces between the longitudinal rod and the clamping tooth, which acts in a fixing and/or locking manner on the angular position (α) of the angular bearing between the clamping head and the cross strut by reversing the force flow. wherein the clamping screw, when actuated, applies a clamping force to the at least one longitudinal rod inserted into the rod receptacle by means of a clamping tooth mounted pivotably about a pivot axis via a rocker bearing, and at the same time or with a time offset fixes an angular position (α) of the angular bearing between the clamping head and the cross strut, characterized in that the rocker bearing is configured as a floating bearing, wherein the floating bearing permits a pivoting movement and a lateral movement of the pivot axis of the clamping tooth, wherein the lateral movement is generated due to clamping forces between the longitudinal rod and the clamping tooth, which acts in a fixing and/or locking manner on the angular position (α) of the angular bearing between the clamping head and the cross strut by reversing the force flow.