The endoscopy is playing a more and more important role among the medical diagnostic instruments after developing over one hundred years . its characteristics of high resolution and electronic imaging make the electronic endoscope irreplaceable in the clinical application 内窥镜经过100多年的发展，已在诊断类医疗仪器中占有重要的一席之地，特别是具有高分辨率、电子成像等特点的电子内窥镜的出现及临床应用。
