内視鏡,申请号JP20150204281-传众专利搜索

内視鏡

申请公布号：JP6067817(B2)

申请号：JP20150204281

申请日期：2015.10.16

申请公布日期：2017.01.25

申请人：

富士フイルム株式会社

发明人：上田佳弘

分类号：A61B1/00;G02B23/24

主分类号：A61B1/00

摘要：PROBLEM TO BE SOLVED: To provide an endoscope for eliminating discomfort in insertion due to the meander of a coil spring.SOLUTION: A soft part of an endoscope incorporates a hardness variable member 35 for changing bending hardness. The hardness variable member 35 includes a wire 31 and a coil spring 33 to be relatively moved in response to the operation of a hardness adjustment knob, so as to change the bending hardness by applying compression force to the coil spring 33. When the compression force is increased, the coil spring 33 meanders. When the coil spring 33 meanders, the soft part changes radial-directional bending hardness at multiple positions in an axial direction at the same position in the axial direction. A hardness adjustment range capable of changing the bending hardness of the soft part is allowed to be equal to or less than the hardness immediately before the coil spring starts meandering in the soft part. Then, the coil spring does not meander so as to eliminate discomfort in insertion.