Vein Finder: "The medical device used to find Vein with Ease". This device is particularly useful in paediatric, obese, elderly, oncology and dark skinned patients where it sometimes can get tough to find a good vein for IV injections. As hemoglobin absorbs infrared light, the AccuVein detects the difference in the hemoglobin concentration between the veins and surrounding tissue, projecting a map of the veins on the skin above.Has anyone been able to use this Device ? Did it help you?