Da Vinci Surgical Robot in Action (Graphic Content)

Thursday, 18 Apr 2013 | 12:00 AM ET

Dr. Younes Bakri, director of gynecologic oncology at West Virginia University and a robotic surgeon who provided this video, says it shows electrical arcing from a cover that was designed to prevent such effects. He and other critics say arcing can burn tissue. (Warning: Graphic Content)