Endoscope Guide Cap Sliding Mechanism for Polyp Detection
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Solution Overview
Problem
Conventional endoscopes face difficulties in smoothly inserting and withdrawing while maintaining a clear visual field, especially in the curved large intestine, leading to reduced polyp detection rates due to the need for varying cap lengths depending on the practitioner's proficiency and preference.
Innovation Solution
An endoscope design featuring a guide cap that slides forward during insertion and backward during withdrawal, with a guide wire and interlocking mechanism to adjust cap length, ensuring a clear visual field and facilitating smooth insertion and enhanced polyp detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a cap is coupled to the front end of the endoscope to flatten the winding large intestine inner walls, then the detection rate of polyps is improved, but the visual field is narrowed and insertion time increases
Solution Approach 1:
The cap is designed with a sliding structure that allows it to dynamically change its position relative to the endoscope main body. During insertion, the cap slides forward to extend the overall length, facilitating smooth passage through the large intestine. During withdrawal, the cap slides backward to reduce the overall length, improving the visual field and reducing insertion time. This dynamic adjustment resolves the contradiction between detection rate and insertion time.
2Ease of operation
If the cap length is increased to facilitate smooth insertion, then ease of operation is improved, but the visual field is narrowed
Solution Approach 1:
The cap's length relative to the endoscope main body is made dynamic through a sliding mechanism. During insertion, the cap extends forward to provide adequate length for smooth operation. During withdrawal, the cap retracts to minimize its length and maximize the visual field area. This dynamic adjustment allows the system to optimize for ease of operation during insertion while minimizing visual field obstruction during withdrawal.
3Area of stationary object
If the cap length is decreased to improve the visual field, then the visual field area is improved, but insertion becomes less smooth
Solution Approach 1:
The sliding structure enables the cap to adjust its length dynamically based on the operational phase. During insertion, the cap extends to provide the necessary length for smooth passage through the curved large intestine. During withdrawal, the cap retracts to minimize length and maximize visual field area. This dynamic adaptation allows the system to optimize for visual field area during withdrawal while ensuring smooth insertion during the insertion phase.
Data Source
AI summary
The present invention relates to an endoscope. The present invention may include an endoscope main body; and a guide cap that is mounted to be fixed to a front end of the endoscope main body when inserting the endoscope main body into a human body and slides to protrude toward the front of the endoscope main body when withdrawing the endoscope main body inserted into the human body. An object of the present invention is to facilitate insertion of the endoscope by freely varying a length of the cap from the front end of the endoscope, and to enhance the detection rate of polyp.