The world of medicine lost one of its legends, Dr. Michael DeBakey at age 99. He was the creator of many inventions and surgical techniques, including one named after him, which continue to save lives today. He benefited from his own surgical technique when he had an aortic aneurysm dissection repaired at age 97. The fact he received surgery when so many others at that advanced age would have never been offered the chance speaks to his greatness and the tremendous pressure as well as loyalty and obligations his surgical colleagues felt that something needed to be done. To be fair, Dr. DeBakey worked into his 80s and was in good health at the time of his aortic dissection.
Probably hundreds of thousands of patients, if not more, have directly benefited from his ideas which are the standard for cardiothoracic surgeons.
There is no one like him in medicine today. There will be no one like him for generations to come.