Blood vessels detection device (BVDD) is a device that was developed by our research team. This device is based on the principle of electromagnetic radioactive absorption of the mass (red blood cells). BVDD helps to see the small blood vessels under skin by the eyes. The initial testing results in the laboratory showed that BVDD was a decide which was small, easy to use and helpful for process to see the structures at 3 ÷ 5 cm depth under skin, clearly observed images. BVDD was invented to help the doctors and nurses to reduce difficulties in injection, infusion and taking
blood… In this article, we talked about the theory of manufacture, operating principles and initial results when BVDD was used to detect the children’s vein.