Cardiovascular devices, namely, synthetic coronary stent grafts; coronary stents; artificial heart valves; angioplasty rings which measure blood flow, blood pressure and blood volume; systems for in vivo cardiovascular blood pressure monitoring comprised primarily of medical sensors for measuring blood pressure, blood flow volume, and heart rate, and also featuring computer hardware and integrated software for communicating and transmitting sensor data; systems for aneurism stent graph comprised primarily of medical sensors for measuring blood pressure, blood flow volume, and heart rate, stent graph leaks, and also featuring computer hardware and integrated software for communicating and transmitting sensor data; systems for hypertension monitoring comprised primarily of medical sensors for measuring blood pressure, blood flow volume, and heart rate, and also featuring computer hardware and integrated software for communicating and transmitting sensor data