See article at: http://thisrecording.com/today/2012/2/16/in-which-the-dalkon-shield-has-a-paralyzing-effect.html
"Hugh Davis was obsessed with inventing things. By the time he landed a job at Johns Hopkins Hospital, he had already created thirty pioneering laparoscopic instruments (used to operate inside the body through a single small incision), establishing the type of minimally-invasive surgery that patients expect today. He had worked with the best doctors and surgeons in the world. They reported that he was a real whiz-kid with an ego of troubling proportions."