There are several brands of imported mechanical main valves.

There are four brands of imported mechanical main valves. They are Sorin, Medtronic, Saint Yuda and On-X. According to relevant public information, the main enterprises in the artificial heart valve market in China are St. Yuda Medical Products Company, Medtronic Company, Italian Sorin Group, American ON-X, Starr, Lanfei and Bairen. Among them, there are 4 registered enterprises that import artificial heart valves, and those that have the registration certificate of artificial mechanical heart valves are Sorin, Medtronic, Saint Yuda and ON-.