The Vein Finder is a device that allows health care workers to better see veins. They use the reflection of near-infrared light to draw a map of the veins. However, early evidence did not show that they increased success in starting intravenous catheters.

One of the most difficult aspects of taking blood is finding an adequate blood vessel. Some patients veins are very small and/or deep and prevent healthcare professionals from finding it quickly and easily. The repeated needle is painful for patients. 

Here is a list of Best Vein Finder devices which every nurse and doctor should know.