Endoscope Clip Device Blade Elasticity
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Solution Overview
Problem
Existing clip devices for endoscopes require complex procedures to release indwelling clips, involving pushing the traction member or operating wire forward and backward, which complicates the process.
Innovation Solution
A clip device with an outer and inner tubular body, a line member, and a pinching part with two base plates and a blade part, where the blade part has a smaller Young's modulus and width than the base plates, allowing easy elastic deformation and reduced tensile load for clip release, and a method that involves pulling the line member toward the proximal side to release the clip without pushing it distally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the traction member or operating wire is pushed forward and pulled back to release the clip, then the clip can be released from the clip device, but the operation becomes complex
Solution Approach 1:
The blade part is designed with a smaller Young's modulus compared to the pinching base plate, making it more flexible and easier to deform. This parameter change allows the blade to open automatically when tensile load is applied, eliminating the need for complex pushing and pulling operations. The differential elasticity between the blade and base plate enables simple pull-to-release operation.
2Ease of operation
If a standard pinching part structure is used, then the structure is simple, but the clip release requires complex pushing and pulling movements
Solution Approach 1:
The pinching part is designed with non-uniform properties: the blade part has a smaller Young's modulus and smaller width compared to the pinching base plate. This local quality differentiation makes the blade more compliant while maintaining the overall structural integrity. The blade can be easily deformed by tensile load to release the clip, while the base plate maintains structural strength.
3Ease of operation
If the blade part has the same dimensions as the pinching base plate, then the structure is uniform and easy to manufacture, but a larger tensile load is required to release the clip
Solution Approach 1:
The blade part is designed with optimized parameters: smaller width and smaller Young's modulus compared to the pinching base plate. These parameter changes reduce the tensile load required to deform the blade and release the clip. The blade's reduced dimensions make it more compliant while the base plate maintains structural integrity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and efficient release of indwelling clips from the clip device, reducing the necessary tensile load and simplifying the process by using a pinching part with a blade that can be easily deformed and a method that eliminates the need for pushing the pinching part distally.
Implementation Method 1
a Young's modulus of the blade part is smaller than that of the pinching base plate. In the clip device for an endoscope of the present invention, the blade part is easy to be elastically deformed due to its small Young's modulus
Data Source
AI summary
A clip device for an endoscope of the present invention comprises an outer tubular body 70; an inner tubular body 80 provided in the outer tubular body 70; a line member 50 placed in the inner tubular body 80; and a pinching part 20, for holding an indwelling clip, connected to a distal side of the line member 50; wherein the pinching part 20 has two pinching base plates 30a and 30b, a blade part 40a is provided at a distal end of the pinching base plate 30a and formed toward an inside of the pitching base plate 30a, a blade part 40b is provided at a distal end of the pinching base plate 30b and formed toward an inside of the pinching base plate 30b, a Young's modulus of the blade part 40a is smaller than that of the pinching base plate 30a, and a Young's modulus of the blade part 40b is smaller than that of the pinching base plate 30b.