一种牵引绳套管的固定件、插入部及内窥镜
By setting a recess in the endoscope to accommodate the distal end of the cannula, the problems of large space occupation and severe wear of the cannula are solved, achieving stable connection and efficient assembly, and extending the service life of the traction rope.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN VATHIN MEDICAL INSTR CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
In existing endoscopes, the traction rope cannula occupies a large amount of internal space in the insertion section, which restricts the assembly of components such as instrument tubes and cables. Furthermore, the interface between the cannula and the snake bone tube is severely worn, affecting operational stability and lifespan.
A recess is provided near the fixing part of the traction rope sleeve to accommodate the far end of the sleeve, reducing the radial intrusion depth. Combined with the installation channel design of the snake tube, it avoids the formation of steps and improves connection stability and wear protection.
It expands the radial installation space of the fastener, simplifies the welding operation of the sleeve, improves assembly efficiency and connection reliability, prevents sleeve misalignment, extends service life, and reduces wear risk.
Smart Images
Figure CN224505402U_ABST
Abstract
Claims
1. A fixing member of a traction rope sleeve applied to an endoscope, characterized by, The fastener has an installation channel (101) for the traction rope sleeve (200) to pass through, and the fastener also includes a recess (110) formed on a sidewall on its proximal side for receiving the distal portion of the traction rope sleeve (200).
2. The fixing member for a traction rope sleeve according to claim 1, characterized in that When the traction rope sleeve (200) is assembled to the position of the fixing member, the inner surface of the traction rope sleeve (200) is tangential to the inner surface of the fixing member.
3. The fixing member for a traction rope sleeve according to claim 1, characterized in that, The recess (110) includes at least one of the following structures: a notch (111) provided at the proximal end of the fastener and penetrating its wall, a receiving groove (112) provided at the proximal end inner wall of the fastener, or an arched section (113) formed at the proximal end of the fastener.
4. The fixing member for a traction rope sleeve according to claim 3, characterized in that The outer diameter of the traction rope sleeve (200) is smaller than the width of the notch (111) so that the traction rope sleeve (200) achieves a limiting fit in the radial direction of the fixing member, and when the traction rope sleeve (200) and the fixing member are in a limiting fit, the inner surface of the traction rope sleeve (200) is tangent to the inner surface of the fixing member. And / or, the wall thickness of the traction rope sleeve (200) is equal to the wall thickness of the fastener; And / or, the distal end of the notch (111) is formed with a stop end (114) for abutting against the distal end of the traction rope sleeve (200).
5. The fixing member for a traction rope sleeve according to claim 3, characterized in that, A connecting part (210) is provided between the notch (111) of the fixing member and the traction rope sleeve (200). The connecting part (210) is located on both sides of the notch (111) along its width direction. The connecting part (210) fixes the fixing member to the traction rope sleeve (200) by welding or bonding.
6. The fixing member for a traction rope sleeve according to claim 3, characterized in that, Support members (300) are provided on both sides of the notch (111), and the support members (300) are used to support and limit the outer wall of the traction rope sleeve (200).
7. The fixing member for a traction rope sleeve according to claim 6, characterized in that The support member (300) includes an inwardly curved segment (310) formed by bending along the edge of the notch (111) in the width direction, wherein: The inner bend (310) is used to abut against the outer wall of the traction rope sleeve (200).
8. The fixing member of the tow rope sleeve according to any one of claims 1 to 7, characterized in that The fastener is a snake joint at the proximal end of the snake tube (100), or a connecting pipe connected to the proximal end of the snake tube (100).
9. An insertion portion characterized by, Includes a fastener for the traction rope sleeve as described in any one of claims 1 to 8.
10. An endoscope characterized by comprising: It includes an insertion part (400) and a handle (500), wherein the insertion part (400) is the insertion part (400) as described in claim 9, and the insertion part (400) is connected to the handle (500).