Endoscopic Instrument Slider Mechanism for Stable Tip Protrusion
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Solution Overview
Problem
Endoscopic treatment instruments face challenges in maintaining constant protrusion, are prone to manipulation errors due to operator fatigue, and have complex configurations leading to high defect rates and costs.
Innovation Solution
The design includes a tubular member with a conductive tip and a slider mechanism that allows for controlled protrusion by satisfying specific stop and release conditions, enabling easy maintenance of constant protrusion with simple manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the operator continuously applies force to the manipulation portion to keep the amount of protrusion constant, then the protrusion amount can be maintained, but operator fatigue increases and manipulation errors occur
Solution Approach 1:
The treatment instrument automatically maintains its protrusion amount through the elastic component and biasing mechanism, eliminating the need for continuous operator force application. The system serves itself by using elastic recovery to counteract any retraction, thereby reducing operator fatigue while maintaining stable protrusion.
Solution Approach 2:
The elastic component provides automatic feedback to maintain the protrusion amount. When the treatment portion is pushed back, the elastic component generates restoring force to return it to the protruding position, creating a self-correcting mechanism that eliminates manipulation errors.
2Stability of the object's composition
If the manipulation portion is made complex to control protrusion, then protrusion control improves, but device complexity increases and manufacturing cost rises
Solution Approach 1:
The invention changes the physical state of the elastic component (flexible or rigid) to achieve different levels of protrusion control. By selecting appropriate elastic properties, the system achieves stable protrusion control without complex mechanical structures, thereby reducing device complexity and manufacturing cost.
Solution Approach 2:
The invention extracts the protrusion control function from complex mechanical manipulation structures and implements it through a simple elastic component. This separation of functions allows the manipulation portion to be simplified while maintaining effective protrusion control.
3Stability of the object's composition
If the treatment instrument is designed to maintain constant protrusion, then operational stability improves, but the instrument may retreat when contacted by other objects
Solution Approach 1:
The treatment instrument transitions from a static fixed-position design to a dynamic system where the treatment portion can move within a controlled range. The elastic component allows the tip to dynamically respond to external contacts while maintaining overall protrusion stability, improving reliability without sacrificing operational stability.
Data Source
AI summary
Provided is an endoscopic treatment instrument that can maintain a state where the treatment instrument protrudes, by a simple manipulation and that can keep an amount of protrusion of the treatment instrument constant. The endoscopic treatment instrument (1) has an operation unit having: an operation unit body (50) fixed to a cylindrical member; and a slider (60) that is fixed to a linear object and is slidable with respect to the operation unit body (50) in the longitudinal direction. The operation unit is provided with a first stop position and a first stop release position distal to the first stop position, the first stop position being a position where the operation unit body (50) and the slider (60) contact each other as a result of relative movement of the operation unit body (50) and the slider (60).