| 摘要 |
An electronic endoscope apparatus includes an electronic endoscope including an insertion portion, an operation portion, and a universal cord which extends from the operation portion so as to be connected to an external device; a plurality of types of signal cables which are selectively placed between a distal end of the insertion portion and a connection connector that is provided at the universal cord, have equal lengths and different diameters, and include overall shields having surface areas corresponding to the diameters; and an electromagnetic covering member which is configured to have a predetermined surface area and covers, as a sheath, a signal cable having a small diameter to form a shield reinforcing portion, the shield reinforcing portion electrically connected to the overall shield of the small-diameter signal cable causing a sum of the surface area of the shield reinforcing portion and the surface area of the overall shield of the small-diameter signal cable to be set to be equal to or larger than the surface area of the overall shield of a signal cable having a large diameter. |
