Pseudo-aneurysms of the ascending aorta after thoracic surgery are rare and pose a problem of surgical strategy with respect to the approach, the myocardial protection and type of repair. The authors have solved the problem by using a new technology, the Post-Access TM system, which, by simply introducing a catheter into the femoral artery, allows endoaortic clamping, the administration of cardioplegic solution, and the drainage of the left heart chambers. The system was used with a good result for treating a pseudo-aneurysm of the proximal anastomosis of a bypass between the ascending aorta and the innominate artery, limiting the duration of circulatory arrest and reducing blood loss.