| 摘要 |
PURPOSE:To improve the durability of a braid of a flexible tube by sticking a lubricant to strands of a protecting braid of an industrial endoscope. CONSTITUTION:An endoscope 1 consists of an operation part 2, an insertion part 3, and a light guide cord 4, and the operation part 2 is provided with an eyepiece part 5 and a bending operation body 6. The insertion part 1 has a tip part 9 connected to the tip of a flexible tube 7 on the base side through a bending tube 8, and the bending tube 8 is bent by pushing and pulling operation wires 10 and 10. The flexible tube 7 has a flex 12 as a core obtained by winding spirally a band-shaped plate 11 which consists of a metal such as stainless steel and is thin and long, and a braid 13 and a sheath 14 are fitted to the outside circumference of this core. A protecting braid 15 is fitted to the outside circumference of the sheath 14, and a lubricant consisting of highly lubricative high polymer materials such as a fluororesin is welded or stuck around strands of the braid 15 obtained by braiding metallic fine strands into a cylindrical shape. |
