#$%^&*AU2018100083A420180215.pdf#####Abstract A tracheoscope pull wire control mechanism includes a rotating wheel pivotally arranged inside a handle； a holding cavity is formed on an upper portion of the rotating wheel； a spring and a brake block are arranged in the groove, such that a connection rod of the control piece above the handle passes through a long slotted hole at a position opposite to the handle, and is clamped and linked with the brake block； and the near ends of the two pull wires are extended and are combined on the rotating wheel of the control mechanism. The positioning structure can be operated with a single hand, which is different from the conventional two-hand control manner； and the operation efficiency and the convenience are improved.
