Raven II Instrument (IMAGE) University of Washington Caption The latest version of the robot has mechanical wrists that hold tiny pincers. Coming soon is a piece that will allow research groups to attach the same tools used by commercial surgical robots. Credit University of Washington Usage Restrictions With credit 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.