Endoscope Tip Bending Section With Fatigue-Resistant Connectors
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Solution Overview
Problem
Existing endoscope tip bending sections are prone to damage due to repeated bending, leading to reduced service life and instability.
Innovation Solution
The tip bending section incorporates connecting members made of materials with higher bending fatigue-resistant strength or reinforced structures, such as structure reinforcing pieces, to enhance the bending fatigue-resistant strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a molded single-piece structure with connecting pieces is used, then the assembly complexity is reduced and production cost is lowered, but the connecting pieces are prone to damage after repeated bending and have low service life
Solution Approach 1:
The patent applies composite materials by combining different material properties in the tip bending section. The connecting pieces are made of a first material with high bending fatigue-resistant strength, while the segments are made of a second material. This composite approach allows the connecting pieces to withstand repeated bending forces better, preventing damage and extending service life while maintaining the simplicity of the molded single-piece structure.
2Reliability
If connecting pieces with high bending fatigue-resistant strength are used, then the service life is extended, but the torsional stiffness and longitudinal stiffness are limited
Solution Approach 1:
The patent applies local quality by assigning different material properties to different parts of the tip bending section. The connecting pieces use a first material optimized for bending fatigue resistance, while the segments use a second material that provides appropriate stiffness characteristics. This localized material selection allows each component to have the specific properties needed for its function, balancing service life and stiffness requirements.
Data Source
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AI summary
A tip bending section (21) of an endoscope, which relates to the field of endoscopes. The tip bending section (21) of the endoscope comprises at least two unit segments; and a connection body (214), the connection body (214) being located between two adjacent unit segments, the connection body (214) being fixedly connected to two adjacent unit segments and bendably deformable, and the bendably deformable connection body (214) being used to enable the two adjacent unit segments to undergo relative deviation; the material of the connection body (214) differs from at least one adjacent unit segment, and the material of the connection body (214) enables the bending fatigue resistance of the connection body (214) to be higher than that of an adjacent unit segment of a different material; and/or the connection body (214) has a reinforcement structure, and the reinforcement structure is used to improve the bending fatigue resistance of the connection body (214). The present invention is able to solve the problem where tip bending sections (21) of endoscopes are prone to damage after being repeatedly bent.