Ku and Vein Valve (image) Georgia Institute of Technology Research News Caption David Ku, Regents' Professor in mechanical engineering at Georgia Tech, squeezes the prosthetic vein valve to the open position. The valve is designed to replace damaged, nonfunctioning valves. Credit Georgia Tech Photo: Gary Meek Usage Restrictions None 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.