Seastar Medical Holding Corp. was granted a third breakthrough device designation by the U.S. FDA for its Selective Cytopheretic device (SCD), a biomimetic membrane-based device used to treat patients with acute inflammatory conditions, which can cause organ failure and death. The latest designation is for its use in patients with hepatorenal syndrome. It follows other indications including cardiorenal syndrome and in adults with acute kidney injury (AKI).