VAD is a mechatronics device used to provide support to the heart pumping blood and maintain human blood circulation. Its core component is a blood pump, which draws blood from the heart, increases the pressure, and then pumps it to aorta. After more than 50 years’ research in the United States and other developed countries, VAD technology has been approved by FDA as an alternative treatment for severe heart failure in replacement of permanent heart transplant. So far, nearly 100,000 cases of clinical use have shown that VAD can help patients with heart failure to significantly improve quality of life and longevity with a possibility of cardiac rehabilitation. The VAD industry has developed into an important segment of the cardiovascular medical device industry.