To report the effectiveness and safety of COSEAL in the control of anastomotic suture line and needle hole suture bleeding during vascular reconstruction by checking the incidence of immediate anastomotic sealing and the presence of persistent intra-operative and postoperative bleeding average time to achieve hemostasis for a single bleeding site after 60 s of clamping without manual compression In case of sternotomy, Hemostasis time in mns, which is operative time comprised between the removal of cardio-pulmonary bypass cannulae and the closure of the sternum.