| 摘要 |
PROBLEM TO BE SOLVED: To provide an insertion section flexible tube of a baby scope which has excellent durability that hardly causes breakage even when the flexible tube is passed through a standing-up piece of a mother scope and which can reduce manufacturing cost considerably. SOLUTION: A portion close to the distal end of the insertion section flexible tube is made of a flexible tube 11A having excellent durability and comprises a spiral tube 111 sheathed with a reticular tube 112 the outer face of which is covered with an outer tube 113. A rear portion of the insertion section flexible tube is made of a flexible tube 11B and comprises a flexible tube 114 arranged instead of the spiral tube 111, a reticular tube 115 covering the flexible tube, and an outer cover 116 covering the outer surface of the reticular tube. COPYRIGHT: (C)2007,JPO&INPIT |
