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1. 发明授权

US5137013A Joint structure composed of flexible tubing and a handling apparatus comprising such a joint structures 失效
标题翻译：由柔性管构成的接头结构和包括这种接头结构的处理装置
公开(公告)号：US5137013A
公开(公告)日：1992-08-11
申请号：US721111
申请日：1991-06-26
申请人： Toshihiko Chiba , Michihiko Okuzumi , Tsuneo Kaziwara
发明人： Toshihiko Chiba , Michihiko Okuzumi , Tsuneo Kaziwara
IPC分类号： G02B23/24 , A61B1/00 , A61B10/06 , A61B17/28 , A61M25/00 , F16F1/04
CPC分类号： A61B17/29 , F16F1/04 , A61M25/0054
摘要： The joint structure of the present invention includes a flexible tube constructed of a coil-wound metal wire element and of another member. This other member includes 1) a main joint joining the end of the outer peripheral surface of the flexible tube to the end of the other member by laser welding either part or all of the main joint; and 2) spot welds joining together adjacent turns of the coil in the vicinity of the main joint by irradiating a laser beam onto a plurality of separate spots extending over the adjacent turns. A handling device for use in endoscopes having such a structure and a similar structure, in which the other member is also a flexible tube either softer or harder than the above flexible tube, is also discussed. Adjacent turns of the coil in the vicinity of each of the welded joints are laser spot-welded at a number of spots, thereby strengthening the thermally affected regions during the laser welding of the joints and increasing the rigidity of the region. This compensates for the lowering of the elastic limit in the vicinity of the welded joints, thereby preventing plastic deformation or buckling in the flexible tubes in the thermally affected regions under a strong bending force.
摘要翻译：本发明的接合结构包括由线圈缠绕金属线元件和另一构件构成的柔性管。该另一个构件包括1）通过激光焊接主接头的一部分或全部而将柔性管的外周表面的端部连接到另一构件的端部的主接头; 以及2）通过将激光束照射到在相邻匝上延伸的多个分开的点上，将主接头附近的线圈的相邻匝连接在一起的点焊。还讨论了具有这种结构和类似结构的内窥镜的处理装置，其中另一个构件也是比上述柔性管更软或更硬的柔性管。在每个焊接接头附近的线圈的相邻匝在多个点处被激光点焊，从而在接头的激光焊接期间加强受热影响的区域并增加该区域的刚性。这补偿了焊接接头附近的弹性极限的降低，从而在强的弯曲力下防止热影响区域中的柔性管中的塑性变形或屈曲。

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