This invention is related to an operation scenario flow, mechanical modeling and analysis system comprising web based, (i) growth (ii) scaling and (iii) quality control aimed, patient based fast prototyping functions, for newborn and fetus cardiovascular repair operations, developed in order to be used for training of doctors and patient specific post surgery performance prediction in hospitals following and prior to, cardiovascular operations within the field of bioengineering in the health sector. Moreover it can be used for both vivo implantation plans of patient specific cardiovascular devices (custom cardiac valve and cardiac support pumps) and adaptation of said devices to the physiology of the patient.