Medical devices for use in medical and surgical applications, namely, instruments and devices for use in cardiovascular and cardiac surgery and the treatment of heart disease; prosthetic or mechanical valves used for cardiac repair, including valve deployment and implantation devices and balloon expandable aortic valve systems; medical apparatus and instruments for treating cardiovascular disease; medical apparatus and instruments for use in cardiovascular procedures; medical apparatus to improve cardiac performance through aortic flow therapy; medical device, namely, a device for improving cardiac performance through aortic flow therapy; artificial cardiac valves