According to the Associated Press, a surgical robot named da Vinci is under scrutiny for assorted problems and deaths, including "hit[ting] a patient in the face during a hysterectomy" and not "let[ting] go of tissue grasped during colorectal surgery".
Here's some pics of that li'l scamp.
Wow. There is NOTHING about "Dr. Stab-bot, M.D." there that isn't terrifying.