Design and construction of median cubital vein transillumination device by using LED

The purpose of the research aims to design and construct the median cubital vein transillumination device by using N1R LED. This research is designed based on the principle of the light absorbance of the blood vessels, transillumination and electronics. The design and construction of median cubital vein transillumination device by using LED was composed of 2 main parts: 1) Power supply was composed of the 12 Volt, 1 Amperes of an electrical transformer, bridge rectifier circuit, and IC voltage regulator No. 7812 and 2) Light Source was composed of LED that have a near infrared wavelength for the suitable looking through the vein, LED board and LED circuit. The result of functional testing found that the median cubital vein transillumination device by using LED can help facilitate a clear vision for the blood vessels to penetrate compared to standard methods.