Die Erfindung betrifft einen Flow-Diverter (4) zur Behandlung und zum Verschluss von Aneurysmen (2) durch Rekonstruktion von Arterien (1). Der Flow-Diverter (4) weist wenigstens eine seitliche Öffnung (7, 9) auf. Dem Flow-Diverter (4) ist erfindungsgemäß eine Vorrichtung (11) zum Einbringen eines Coils (10) in das Aneurysma (2) durch die Öffnung (7, 9) zuordenbar.The flow diverter (4) comprises a lateral opening (9) and a unit (11) for inserting a coil (10) into the aneurysm through the opening. One of the lateral openings is formed for passage of the coil inserting unit. Larger lateral openings are provided at defined points, which are dimensioned such that the blood flow to the collateral vessels is completely ensured. The flow diverter comprises a close-mesh nitinol meshwork. A reinforcing ring (12) made of metal is mounted around the openings of the flow diverter.