Endoscope Distal End Rigid Portion Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing endoscope designs face challenges in attaching built-in objects to the distal end portion, as the force applied during assembly can damage the bent portion, leading to potential structural issues and reduced durability.
Innovation Solution
The endoscope design incorporates a rigid portion with recessed surfaces and a transition surface, which is inserted into a channel system within the distal end portion, allowing for precise positioning and fixation using an adjustment tool without applying direct force on the bent portion, ensuring the rigid portion is securely held and preventing damage during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the second portion of the bent built-in object is gripped and rotated or pushed for positioning, then the built-in object can be attached to the distal end portion, but the force concentrates on the second portion or bent portion causing damage
Solution Approach 1:
The built-in object is divided into three segments: the first portion (distal end), the bent portion (middle), and the second portion (proximal end). The rigid portion is added as a separate segment at the distal end, allowing force application to be isolated from the bent portion during assembly.
Solution Approach 2:
The rigid portion acts as an intermediary between the first portion and the external environment. It provides a interface for the adjustment tool to apply force directly to the distal end, preventing force transmission to the vulnerable bent portion while still enabling positioning operations.
2Manufacturing precision
If the rigid portion is inserted into the first channel with both outer peripheral surface and first surface exposed, then positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The rigid portion features surfaces extending in multiple directions (outer peripheral surface and recessed first surface) that are both exposed through the channel system. This multi-dimensional exposure allows the adjustment tool to access and manipulate the rigid portion from the distal end, achieving precise positioning without complex internal mechanisms.
Data Source
AI summary
An insertion portion of an endoscope including a distal end portion including: an exterior surface, a first channel including a first opening on the exterior surface, and a second channel including a second opening on the exterior surface and a third opening on the first channel. An elongated object is inserted into the first channel. A rigid portion is provided at a distal end of the first elongated object. The rigid portion including: an outer peripheral surface, and a first surface recessed from the outer peripheral surface of the rigid portion. Wherein both of the outer peripheral surface and the first surface are exposed within the third opening.