In this photo from video provided by Intuitive Surgical, Inc. of Sunnyvale, Calif., maker of the da Vinci robotic system, doctors are seen using the device to perform a surgery. (Associated Press/Courtesy of Intuitive Surgical, Inc.)

Photo by: Uncredited

In this photo from video provided by Intuitive Surgical, Inc. of Sunnyvale, Calif., maker of the da Vinci robotic system, doctors are seen using the device to perform a surgery. (Associated Press/Courtesy of Intuitive Surgical, Inc.)