Supply Of Medical Materials For Implants In Patients Requiring Transcutaneous Aortic Valve (Tavi) Placement With Cpv: 33182220-7 (Heart Valves), 33141200-2 (Catheters) And 33111730-7 (Angioplasty Materials), To Meet The Needs Of The Special Unit : Hemodynamics-Coronaryography And Interventional Cardiology Of The P.G.N. Alexandroupolis For A Period Of One (1) Year. (EXPIRED)