Foley Catheter Illustration (IMAGE) Michigan Medicine - University of Michigan Caption Indwelling urinary catheters, also called Foleys, are used by many hospital patients. But a new study shows more than half of them may suffer a complication due to the device. Credit University of Michigan Usage Restrictions Credit University of Michigan 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.