Patent ID: 8718234

Claim:
Multi-leaf collimator with leaf drives, with two sets of displaceable leaves arranged side by side of each other and facing each other in order to impress a high-energy beam with the shape of an irregularly formed treatment object by enabling each of the leaves to assume a position oriented along the shape of the treatment object by means of the leaf drives, with the leaf drives being designed in such a way that the leaves are each equipped with a gear rod-like drive engagement in a direction of displacement, wherein a pivotable leaf-side gear segment located, together with a motor-side gear segment on a segment disk, engages with the gear rod-like drive engagement, with a pinion drivable by a motor engaging with the motor-side gear segment, wherein the segment disks are arranged side by side for each set of leaves as a package on one axle, and wherein the motor-side gear segments of two segment disks located next to each other are staggered in such a way that they will not abut each other.