Needlescopic Wrist (1 of 2) (VIDEO) Vanderbilt University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Vanderbilt engineers have developed a mechanical wrist that is less than 2 mm in diameter: small enough to be used for needlescopic surgery. Credit MED Lab, Vanderbilt University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.