Smart Microneedle Patch for Thrombosis (IMAGE) North Carolina State University Caption Schematic of thrombin-responsive patch that releases heparin in response to thrombin. Credit Yuqi Zhang 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.