Endoscope Suction Port Tilt Angle Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional endoscopes with wide viewing angles face challenges in effectively observing out-of-field ranges and maintaining sufficient suction force without disturbing the body cavity wall during waste material removal, due to the design of the suction port's tilt angle relative to the observation window.
Innovation Solution
The endoscope design features a suction port with a more acute tilt angle compared to the illumination window, ensuring a wider gap between the suction port and the body cavity wall, thereby maintaining a strong suction force while preventing absorption of the body cavity wall and ensuring a sufficient illumination range corresponding to the image pickup range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the suction port is designed with a larger tilt angle to increase the gap with the body cavity wall, then the suction force is improved, but the illumination range becomes insufficient
Solution Approach 1:
The suction port is designed with a specific tilt angle relative to the observation window that is optimized for local suction performance. The tilt angle is set to be larger than that of the illumination window but smaller than a certain threshold, creating different local characteristics for suction and illumination functions simultaneously.
Solution Approach 2:
The suction port and illumination window are designed with asymmetric tilt angles relative to the observation window. The suction port has a larger tilt angle to enhance suction force, while the illumination window has a smaller tilt angle to maintain adequate illumination range, creating an asymmetric configuration that optimizes both functions.
2Area of stationary object
If the suction port is designed with a smaller tilt angle to maintain adequate illumination range, then the illumination range is improved, but the suction force becomes insufficient and the body cavity wall may be absorbed
Solution Approach 1:
The tilt angle of the suction port is precisely controlled within a specific range (larger than the illumination window's tilt angle but smaller than a threshold value). This parameter optimization ensures that the gap between the suction port and body cavity wall is sufficient to prevent wall absorption while maintaining effective suction force.
3Reliability
If the tilt angle of the suction port is increased to prevent body cavity wall absorption, then the reliability is improved, but the suction force is reduced
Solution Approach 1:
The tilt angle of the suction port is optimized to a specific range that balances two opposing requirements: it is large enough to prevent body cavity wall absorption (improving reliability) but not so large that it reduces suction force. This precise parameter control resolves the contradiction between reliability and suction force.
Data Source
AI summary
An endoscope includes an observation window for observing an image of a photographic subject; an illumination window for emitting illumination light for illuminating the photographic subject; a suction port connected to a suction channel are provided on a distal end surface of an insertion portion; an observation window peripheral edge portion which is formed so that a surface having the observation window is vertical to an observation light axis; an illumination window peripheral edge portion which is formed so that a surface having the illumination window is vertical to an illumination light axis which tilts outward with respect to the observation light axis; and a suction port peripheral edge portion which is formed so that a surface having the suction port is flush with the observation window peripheral edge portion.