An occlusion device (1) and a production process for its manufacture are described. The occlusion device includes a braiding (7) of wire or thread (7a), wherein the occlusion device (1) has a hollow design given by a reshaping and heat-treatment process, is self-expandable, and is configured for secure anchoring in the heart. The occlusion device (1) comprises a retention region and a central region (5) wherein the occlusion device is at least partly hollow.
