Dial wheel assembly, traction mechanism, endoscope, and method for tensioning traction ropes

By designing the dial assembly and utilizing the rotatable and fixed connection between the first and second dials, the problem of inconsistent tension of the endoscope traction rope was solved, achieving uniform tension of the traction rope and ease of operation, thus improving the production quality of the endoscope.

WO2026119259A1 Publication Date: 2026-06-11HUNAN VATHIN MEDICAL INSTR CO LTD
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Patent Information

Application Number
PCT/CN2025/140213
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-12-06
Filing Date
2025-12-05
Publication Date
2026-06-11

AI Technical Summary

Technical Problem

In related technologies, the tension of the traction rope in endoscopes is inconsistent, which may cause the active bending section to bend towards the side with greater tension in the traction rope in the initial state, affecting the production quality of the endoscope.

Method used

The system employs a dial assembly, including a first and a second dial, connected by fasteners. In the first state, the dials are rotatable, while in the second state, they are fixed. The operator can control the dials to rotate in opposite directions with one hand to tension the traction rope and easily switch states to adjust the angle as needed.

Benefits of technology

It improves the consistency of traction rope tension, simplifies the retensioning process, makes operation easier, solves the problem of inconsistent traction rope tension, and improves the production quality of endoscopes.

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Abstract

Disclosed are a dial wheel assembly (100), a traction mechanism (200), an endoscope, and a method for tensioning traction ropes (210, 220), relating to the technical field of medical instruments. The dial wheel assembly (100) comprises a first wheel disc (110) and a second wheel disc (120). The first wheel disc (110) is configured to fix a first traction rope (210), and the second wheel disc (120) is configured to fix a second traction rope (220). The dial wheel assembly (100) further comprises a fastener (130). The fastener (130) is configured to be connected to the first wheel disc (110) and the second wheel disc (120). The fastener (130) has at least a first state and a second state. When the fastener (130) is in the first state, the first wheel disc (110) and the second wheel disc (120) are rotatably connected; when the fastener (130) is in the second state, the first wheel disc (110) and the second wheel disc (120) are fixedly connected. The dial wheel assembly (100) can improve the consistency of the tension degree of the first traction rope (210) and the second traction rope (220). Compared with the method for re-tensioning the first traction rope (210) and the second traction rope (220) in the prior art, the method for tensioning the traction ropes (210, 220) has the advantages of a simple process and easy operation.
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