The coating on the needle turns into a gel when it touches the skin, preventing blood loss and reducing the risk of infection Getty ImagesA needle that prevents bleeding after injections could help thousands of patients whose wounds do not heal properly. While most people only lose a tiny amount of blood after receiving a jab, patients with haemophilia and other conditions can bleed copiously, dramatically raising their risk of infection. A team of scientists led by the Korea Advanced Institute of Science and Technology have developed a needle coating that seals veins and skin in an attempt to prevent these problems. They covered the metal with chitosan, a complex sugar compound that is usually made by boiling down the chitin found in the…

Source: The Times October 03, 2016 15:56 UTC