Electronic endoscope with grounded spirally-wound lead wires

摘要

An electronic endoscope apparatus provided with an electronic endoscope having arranged thereon a solid-state image pickup element at an insertion portion, and external devices such as a light source device for supplying an illumination light to the electronic endoscope, a video processor for processing an electrical signal transmitted from the solid-state image pickup element of the electronic endoscope to produce a video signal. An electrical connection portion for electrically connecting the electronic endoscope and the video processor is provided at a connector portion which is provided at an end of a universal cord which connects the electronic endoscope and the light source device. An electromagnetic interference countermeasure member is provided which covers at least one of the connector portion, the universal cord and the external devices. A dual shield around a signal line is also provided which includes spirally-wound lead wires having different diameters and ends connected to video ground.