An interface for remotely controlling a medical device in a patient's body provides a two dimensional display of a three dimensional rendering of the operating region, and allows the user to select the orientation or location of the distal end of the medical device on the display and then operate a navigation...http://www.google.com.hk/patents/US7543239?utm_source=gb-gplus-share專利 US7543239 - User interface for remote control of medical devices