Modular Stone Extraction Device With Detachable Fragmentation Tool
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Solution Overview
Problem
Current stone extraction devices are inconvenient for use in both extraction and fragmentation procedures due to their complex structure, requiring a large and heavy operation section even for extracting stones that do not need fragmentation.
Innovation Solution
A stone extraction and fragmentation device with a modular design that includes a flexible basket section and a ratchet mechanism, allowing for easy attachment and detachment of a stone fragmentation operation section, enabling both compact and lightweight operation for extraction and application of sufficient force for fragmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stone extraction device is used for both extraction and fragmentation, then the device structure becomes complicated, but the versatility is improved
Solution Approach 1:
The device is divided into a handle section and a operation section that can be detached. The operation section includes a basket and an optional fragmentation tool that can be attached or detached as needed. This segmentation allows the device to be configured for either extraction alone or extraction with fragmentation, avoiding the need for a permanently complicated structure while maintaining versatility.
Solution Approach 2:
The device allows dynamic reconfiguration by attaching or detaching the fragmentation tool from the operation section based on the specific procedural needs. This dynamic adaptability enables the system to transition between different functional states (extraction-only mode vs. extraction-with-fragmentation mode) without being locked into a permanently complex configuration.
2Adaptability or versatility
If a complicated operation section is provided for fragmentation, then the fragmentation capability is improved, but the weight increases
Solution Approach 1:
The fragmentation function is segmented into a separate detachable tool rather than being integrated into the main operation section. This allows the fragmentation capability to be added only when needed, keeping the base operation section lightweight for simple extraction procedures while providing the option to attach the heavier fragmentation tool when fragmentation is required.
Solution Approach 2:
The operation section is designed with universal compatibility to accept both extraction-only configurations and extraction-with-fragmentation configurations. The handle and operation section form a universal base that can work with different tool attachments, allowing the system to adapt its weight and functionality to match the specific procedural requirements without always carrying the full weight of fragmentation capabilities.
3Force
If a large operation section is used for fragmentation, then the force application capability is improved, but the ease of operation deteriorates
Solution Approach 1:
The device separates the force application function into a dedicated fragmentation tool with a ratchet mechanism, while the main operation section retains a simpler, more maneuverable structure. This segmentation allows the fragmentation tool to be larger and more forceful when attached, while the base operation section remains easy to operate for navigation and stone capture.
Solution Approach 2:
The ratchet mechanism acts as an intermediary between the operator's manual force and the basket, providing mechanical advantage and force amplification. This allows a smaller, more maneuverable operation section to generate sufficient fragmentation force through the ratchet's mechanical advantage, rather than requiring a large, cumbersome direct-force structure.
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
The device allows for easy operation in both stone extraction and fragmentation, providing a compact and lightweight solution that can apply the necessary force for stone fragmentation without the need for device replacement.
Implementation Method 1
a ratchet mechanism configured to advance the operation wire in the distal direction when a rotation member is rotated
Implementation Method 2
The basket section has a plurality of elastic wires
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A stone extraction fragmentation device (1) of the present invention include: a stone extraction operation section (4) having a first main body (30) and a gripping section (41); and a fragmentation operation section (50) having a second main body (52), a moving body (69) which is capable of being connected with the first main body (30), and a rotating knob (75) which is configured to move the moving body (69) with respect to the second main body (52), wherein the fragmentation operation section (50) is capable of driving the basket section by moving the gripping section (41) in a direction away from the first main body (30) in accordance with moving the moving body (69) in a direction away from the fragmentation operation section (50) using rotation of the rotating knob (75).