| 摘要 |
An endoscope has a long slender insertion section to be inserted in a body cavity. The insertion section is composed by connecting a flexible portion to a distal portion having a CCD image sensor with a bending portion. Inserted through the insertion section are an air/water tube, a signal cable and other long slender contents. The air/water tube is enlarged in diameter in an area of the bending portion, and increases a filling rate of the contents in the bending portion.
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