| 摘要 |
An endoscope system in accordance with the present invention comprises first to third endoscopes having different capabilities. The outer diameter of a large-diameter portion of a soft section of the first endoscope ranges from the largest outer diameter of soft sections of the second and third endoscopes included in the same endoscope system to the smallest outer diameter thereof. When an operator handles any of the first to third endoscopes, since the outer diameters of the insertion units of the endoscopes fall within a certain range, the operator will not strongly feel that something is uncomfortable. The operator can handle the endoscopes with the same sense of handling.
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