Design and Implementation of Phototherapy Device with Multi-mode Operating and Auto-dimming Function

• Main Authors: Huang Chih-Chieh, 黃志傑
• Other Authors: Ching-Biau Tzeng
• Format: Others
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/76263263036567931013

碩士 === 崑山科技大學 === 電子工程研究所 === 95 === Jaundice is a common condition in newborns. There are two types of this condition: physiological (normal) and pathological.Physiological jaundice generally appears at 2 to 4 days of age and disappears by 1 to 2 weeks of age. This is normal and no treatment needed. When jaundice appears too long (more than a week) or Bilirubin level appears over the normal range (>20mg), immediate treatment is needed to prevent permanent damages. Physiological jaundice is most often treated with phototherapy (treatment with a special light by alternating Bilirubin and making it easier for baby’s liver to get rid of it). Currently in hospital, phototherapy is using the light with only single intensity of illumination (a fluorescent light) and timer to control manually for each course (cycle) of the treatment. You cannot adjust the intensity of illumination or the duration of treatment time for each individual case. This may cause some unnecessary damages to the newborn that have to receive the high intensity of illumination when starting phototherapy. For better controlled and satisfied result of phototherapy, we developed this multiple operating system to help achieve a safe and effective phototherapy result for newborns.This system is using LED which wavelength has been set in a specific range to execute illumination. The medical personnel can adjust the intensity of illumination and duration of treatment time specifically base on individual condition. They can even set different intensity with different time table in one treatment cycle, making adjustment and monitoring the phototherapy progress accordingly as planned.