Compared with the prior art, the endoscope hook head variable-diameter traction structure has the following beneficial effects that the steering engine drives the driving traction wheel to rotate, the driving traction wheel drives the two driven traction wheels to rotate synchronously, so that the second traction rope is pulled, the hook head is pulled to deflect, and the hook head is pulled to deflect through the transmission ratio of the driving traction wheel to the driven traction wheels; the traction distance of the second traction rope is larger than the traction distance of the first traction rope, the traction length of the second traction rope can be guaranteed on the premise that the small size of the traction wheel is guaranteed, and therefore the traction wheel can adapt to the working condition of a long-size insertion end, and the small size of an operation handle can be guaranteed. Comprising a main traction wheel provided with a first wire slot; each driving traction wheel is correspondingly provided with two driven traction wheels, a second wire groove and a third wire groove are formed in the peripheral surface of each driven traction wheel at intervals, and the perimeter of each second wire groove is smaller than that of each third wire groove; a first traction rope is wound around the second wire groove, and the other end of the first traction rope is connected with the first wire groove.

    本发明公开的一种内窥镜勾头变径牵拉结构与现有技术相比具有以下有益效果:舵机带动主动牵引轮转动,主动牵引轮带动两个从动牵引轮同步转动,从而牵拉第二牵引绳,拉动勾头进行偏转,通过主动牵引轮和从动牵引轮的传动比,第二牵引绳被牵引的距离大于第一牵引绳被牵引的距离,能够在保证牵引轮小尺寸的前提下保证牵拉第二牵引绳的长度,从而能够适应长尺寸插入端的工况,还能够保证操作手柄的小尺寸;包括:主牵引轮,设有第一线槽;从动牵引轮,每个主牵引轮对应设置有两个,从动牵引轮的外周面间隔设置有第二线槽和第三线槽,第二线槽的周长小于第三线槽的周长;所述第二线槽绕设有第一牵引绳,第一牵引绳的另一端与第一线槽连接。


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    Title :

    Reducing traction structure of endoscope hook head


    Additional title:

    一种内窥镜勾头变径牵拉结构


    Contributors:
    LUO JINHUI (author) / ZHANG QI (author) / SUN JIABAO (author)

    Publication date :

    2025-04-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B66D Haspeln , CAPSTANS



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