The incidence of myocardial infarction is about 100,000 per 50.If it is not timely rescued after the onset of the disease, the mortality rate is extremely high.Most patients with myocardial infarctionare middle-aged and elderly people with coronary heart disease and angina, and the incidence and mortality are high,but at present, there is a tendency toward rejuvenation. According to the information platform for the incidence of acute myocardial infarction in Beijing from 2007 to 2009, the incidence of people aged over 25 in all age groups has risen significantly, especially in people aged 35-44 from 2007 to 2009, increased by 31.8% in three years. At present, China's cardiovascular patients including coronary heart disease, stroke, heart failure and hypertension are estimated to have reached 230 million. China has 3 million people each year. As a result of cardiovascular disease, one out of every three deaths is cardiovascular disease, and the incidence and mortality of cardiovascular disease is still an increasing trend.Therefore, the demand for products will be relatively large, and the market growth rate can reach more than 20%.