Researchers at the University of Hong Kong (HKU) say they have developed a world-first nasal spray that delivers neurotherapeutic powder directly to the brain as first aid for ischemic stroke patients, with clinical trials expected by 2030. The treatment is intended for initial use by paramedics, before being rolled out to high-risk groups in care facilities and eventually the general public through pharmacies. It was developed by the Li Ka Shing Faculty of Medicine at HKU and the university’s..