Design of a Non-invasive Medical System for Measuring Bilirubin by Photometric Method

Abstract

Newborn jaundice is when a baby has a high level of bilirubin in the blood. Bilirubin is a yellow substance that the body creates when it replaces old red blood cells. The liver helps break down the substance so it can be removed from the body in the stool. High levels of Bilirubin make babys skin and whites of the eyes look yellow .this is called jaundice. Any infant who appears jaundiced should have Bilirubin levels measured right away. Recently , the method used for measure Bilirubin level is an invasive method , which is not a comfortable method for both infants and doctors and doctors face many difficulties in take the sample of blood from patients especially from infants, because of the small size of infant arteries . The project describes the design of an electronic instrument for measuring Bilirubin by the optical method of light transmission through the skin. There was the knowledge of light transmission and absorption on a specific tissue compartment applied. The relevant skin photo-diagnostics handle 455 nm and 575 nm. The registration of transmitted light of different frequency combinations presents the Bilirubin quantity in human body by a non – invasive way.