| 摘要 |
A bending control mechanism for an endoscope includes a bending portion in an insertion portion of the endoscope. The bending portion is controlled by a bending wire extending therefrom. A pulley operates in linkage with a bending control lever through a shaft portion of the pulley. The lever is in a control portion of the endoscope. A driving wire winding groove spirals along the pulley's outer peripheral surface and extends in its peripheral direction. A driving wire winds along the groove. A connection member connects the driving wire with the bending wire. A guide member in the control portion has a slidably mounted connection member. With the most driving wire wound around the pulley, a relative position between the pulley and the guide member is such that the driving wire extends substantially in parallel to a guide surface of the guide member.
|
