Abstract: The tracheoscope catheter bending structure mainly includes a main elastic spring ring, two small elastic spring rings and a fixed seat, wherein the main elastic spring ring is arranged inside a hose at the far end of a tracheoscope catheter; the two small elastic spring rings are arranged at the internal opposite two side positions of the main elastic spring ring; two pull wires provided for a tracheoscope are respectively penetrated through the two small elastic spring rings; the fixed seat is held at the farthest end of the hose; the far ends of the two pull wires respectively pass through penetration holes at the two sides of the fixed seat and are fixed; the other ends of the pull wires are extended and are combined with a control mechanism inside a handle.

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.

Abstract: A tracheoscope includes a handle having a control mechanism; one end of the handle is connected with a plug-in type screen, and the other end of the handle is combined with a catheter; the far end of the catheter is provided with a hose part including a main elastic spring ring inside, and the farthest end of the catheter is combined with a probe provided with a shooting module and luminophors inside; two pull wires are arranged in the catheter; and the near ends of the two pull wires are extended and are combined on the control mechanism, and the far ends of the two pull wires are respectively arranged in two small elastic spring rings in a penetration manner and are fixed. The probe can be stably combined with the shooting module and the luminophors, so the shooting stability is improved.