Clarence Walton Lillehei

My hero is Clarence Walton Lillehei because he improved ECMO (Extracorporeal Membrane Oxygenator), and ECMO saved my life. Clarence Walton Lillehei was born on October 23, 1918 and he died on July 5, 1999.  He was a pioneer of open-heart surgery. And today I’m talking about Clarence Walton Lillehei.

Clarence Walton Lillehei was a surgeon. He was the most successful doctor in at that time. He was a professor in the Department of Surgery at the University of Minnesota from 1951 to 1967, during which time he participated in the world's first open-heart surgery using cryotherapy.

Even though doing the surgery is not easy, he devoted himself to saving a life. He improved ECMO to save more people’s lives. To me, he is a true hero. 

References:                                                   

https://zh.wikipedia.org/wiki/%E5%85%8B%E6%8B%89%E4%BC%A6%E6%96%AF%C2%B7%E6%B2%83%E5%B0%94%E9%A1%BF%C2%B7%E6%9D%8E%E6%8B%89%E6%B5%B7