Endoscope Distal End Raising Base Tool Guidance
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Solution Overview
Problem
Existing endoscope distal ends face challenges in efficiently guiding and inserting treatment tools due to limitations in the design of the treatment tool raising stand, which can lead to tool misalignment and reduced insertability.
Innovation Solution
The endoscope distal end features a rotatable treatment tool raising stand with a shaft hole and a treatment tool guiding surface that adjusts the direction of the treatment tool, ensuring optimal alignment and insertability by positioning the guiding surface to intersect the longitudinal direction in the laid state, and utilizing a unique internal surface configuration within the shaft hole to prevent unnecessary bulging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the treatment tool raising stand is designed with a simple structure, then the device complexity is reduced, but the treatment tool guiding precision deteriorates
Solution Approach 1:
The patent applies local quality by providing a treatment tool guiding surface with specific geometric characteristics (inclined surface configuration) at the critical interface where the treatment tool interacts with the raising stand. This localized geometric feature ensures precise tool guiding without requiring the entire raising stand structure to be complex, thus resolving the contradiction between simplicity and precision.
2Ease of operation
If the treatment tool guiding surface is positioned to intersect the longitudinal direction in the laid state, then the treatment tool insertability is improved, but the raising base configuration complexity increases
Solution Approach 1:
The patent utilizes dynamics by designing the raising base to be rotatable relative to the distal end body, allowing the treatment tool guiding surface to change its orientation between raised and laid states. This dynamic configuration enables the guiding surface to intersect the longitudinal direction in the laid state for optimal tool insertability, while the rotatable mechanism provides the necessary adaptability without requiring a completely complex static structure.
3Manufacturing precision
If the shaft hole interior surface is configured to abut against the shaft at the shortest distance from the guiding surface, then the treatment tool alignment precision is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the shaft hole interior surface with a specific abutting surface positioned at the shortest distance from the treatment tool guiding surface. This preliminary geometric arrangement ensures that when the shaft is inserted, the abutting surface automatically establishes precise alignment between the shaft and guiding surface, thereby improving tool alignment precision while the pre-defined geometry simplifies the manufacturing process compared to achieving the same precision through post-manufacturing adjustment.
Data Source
AI summary
A distal end portion for use with an endoscope includes: a distal end body having an insertion hole, the insertion hole configured to accept a treatment tool inserted therethrough; a shaft rotatably disposed relative to the distal end body; and a raising base configured to rotate with the shaft, and be movable between a raised state where the raising base has been raised relative to a longitudinal direction of the distal end body and a laid state where the raising base has been laid relative to the longitudinal direction, and the raising base comprising; a shaft hole having an interior configured to be engaged with an exterior of the shaft; and a treatment tool guiding surface configured to abut against the treatment tool to adjust a direction in which the treatment tool protrudes.