Tip portion of flexible inserting tube of electronic endoscope

摘要

A tip portion of a flexible inserting tube of an electronic endoscope includes a solid-state image sensing device mounted in the tip portion of the flexible inserting tube. The solid-state image sensing device includes a buffer substrate having a rear surface. The rear surface is provided with an earth terminal. The rear surface is also provided with an electronic component protruding rearwards from the rear surface. An conductive block such as a metal block is fixed on the earth terminal. The conductive block protrudes rearwards beyond the electronic component. A signal cable is passed through the flexible tube. The signal cable has a ground line such as a woven metal shield surrounding at least one signal line of the signal cable. The ground line of the signal cable is connected to the conductive block at a side opposite to the buffer substrate.