Endoscopic Tip Cap Adhesion via Protrusion-Guided Sealing
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Solution Overview
Problem
The existing endoscopic insertion section tips face challenges in achieving secure adhesion and sealing between the tip body and cap due to manual application of adhesive, leading to uneven adhesive density and potential voids around the forceps hole, which can result in bacterial contamination and chemical solution infiltration, compromising the integrity of the imaging unit and cap attachment.
Innovation Solution
The introduction of protrusions between the tip body and cap ensures parallel alignment and creates a uniform space for adhesive application, ensuring a reliable and uniform adhesive density around the forceps hole, preventing voids and enhancing adhesion strength while maintaining sealing integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual application of adhesive is used between tip body and cap, then the adhesion process is simple and quick, but the adhesive density becomes uneven and voids form around the forceps hole
Solution Approach 1:
Protrusions are pre-formed on the tip body before adhesive application. These protrusions create predetermined spaces that guide adhesive flow and ensure uniform distribution, preventing void formation around the forceps hole while maintaining efficient assembly
Solution Approach 2:
The protrusions act as intermediaries between the tip body and cap, creating controlled spaces that mediate adhesive distribution. This intermediary structure ensures the adhesive fills the bonding interface uniformly without requiring complex manual application techniques
2Ease of operation
If the tip cap and tip body are adhered with tilted faces, then assembly is easier, but sealing integrity is compromised and bacteria/chemical solutions can infiltrate
Solution Approach 1:
The protrusions create localized structural features at specific positions around the forceps hole. This local quality enhancement ensures that critical sealing areas have uniform adhesive distribution and face alignment, preventing infiltration while maintaining overall assembly simplicity
Solution Approach 2:
The protrusions are pre-formed to establish correct face alignment before the cap is attached. This preliminary structural guidance ensures proper orientation and sealing integrity are achieved automatically during assembly, eliminating the need for complex alignment procedures
3Ease of manufacture
If adhesive is applied with low density to maintain simplicity, then application is easier, but voids form around the forceps hole allowing contamination
Solution Approach 1:
The protrusions serve as intermediary structures that actively manage adhesive distribution. They create controlled spaces that channel adhesive flow to ensure complete filling of the bonding interface, particularly around the forceps hole, preventing contamination pathways while keeping the application process simple
Data Source
AI summary
A tip of an endoscopic insertion section includes a tip body having a forceps hole, and a cap covering the distal face of the tip body and having an opening corresponding to the forceps hole. Protrusions are provided between the distal face of the tip body and the opposite face of the cap that is opposite to the distal face, so that a specified space is formed between the distal face and the opposite face with the protrusions. In the space, at least a region around the forceps hole is filled with an adhesive so as to adhere the tip body and the tip cap together with no voids in the adhesive surrounding the forceps hole and thereby prevent disadvantages due to the entrance of a body fluid or a chemical cleaning solution through such voids.