Single-use Tissue Ligation Device with Segmented Clip
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Solution Overview
Problem
Current hemostatic clamps used for treating non-variceal active bleeding during endoscopy are complex to operate, prone to misplacement, and require repeated assembly and disinfection, increasing the risk of infection and procedural complications.
Innovation Solution
A single-use, integrated living tissue ligating device with a clamp and conveying unit that allows for repetitive positioning and easy operation, featuring a connecting rod with wings that disengage from holes or grooves under a certain pull force, enabling precise placement and secure ligation of tissues without the need for repeated assembly or sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separated clip and device design is used, then the device can be reused, but the operation becomes complex and requires repeated assembly and disinfection
Solution Approach 1:
The patent combines the clip and device into a single integrated unit that cannot be separated. The clip is pre-assembled with the device body, eliminating the need for repeated assembly and disinfection operations. This integration resolves the contradiction by maintaining reusability through the entire unit while dramatically simplifying the operational process.
Solution Approach 2:
The integrated design includes a segmented structure where the clip can be divided into multiple sections that can be independently manipulated. This allows the device to maintain its integrated form for reusability while providing operational flexibility through the segmented clip design.
2Ease of operation
If a handle-based opening mechanism is used, then the clip can be opened or folded, but it is not easy to control and may fold before being used
Solution Approach 1:
The patent replaces the traditional handle-based mechanical opening mechanism with a more reliable control system. The new mechanism provides better control precision, preventing premature folding of the clip while maintaining the ability to open it when needed. This substitution resolves the contradiction between operational ease and control reliability.
3Productivity
If a long clip with spiny protrusion is used, then the clip can be released, but it is not suitable for small spaces and risks causing perforation
Solution Approach 1:
The patent applies local quality by modifying specific areas of the clip design. The clip features a smooth surface in critical areas to eliminate perforation risk, while maintaining the release function through localized structural features. This resolves the contradiction by preserving productivity through the release function while eliminating harmful factors in vulnerable areas.
4Measurement precision
If the clip and device are integrated for repeated positioning, then positioning accuracy can be observed, but the structure becomes more complex with opposite direction operations
Solution Approach 1:
The integrated design allows the device to serve itself by providing built-in positioning indicators and feedback mechanisms. The structure enables repeated positioning with observable accuracy without requiring complex external control systems. This self-service approach resolves the contradiction by achieving measurement precision through the device's own integrated features rather than adding external complexity.
Data Source
AI summary
A living tissue ligating Device, comprising a clamp (10), an operating device (20) and a conveying device (30); the clamp (10) comprising an elastic clip (11) and a tightening tube (12) to receive the elastic clip (11) therein; the operating device (20) comprise a handle (21) and a slider (22) capable of sliding on the handle (21); and the conveying device (30) comprises an outer connecting mechanism (31) and an inner connecting mechanism (32). The device can be widely used at various positions in the alimentary canal, can be repeatedly opened and closed, and is simple to operate.