Adjustable Snare Wire Tissue Binding Mechanism
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Solution Overview
Problem
Existing tissue binding methods require repositioning and re-clipping of a snare wire if it is not initially placed correctly, leading to inefficiencies in targeting and binding the intended tissue site.
Innovation Solution
A tissue binding method involving a ring-shaped snare wire that is disposed around the binding target site, with the snare wire pressed against the tissue at multiple positions along its axis, allowing for adjustment and reduction in diameter to secure the tissue, facilitating precise placement and binding even on irregular surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the snare wire is fixed around the binding target site with clips before tissue is lifted, then the tissue can be securely held for binding, but if the snare wire is not at the intended position, it requires time-consuming removal and reattachment of clips to reposition
Solution Approach 1:
The pressing member is designed to be movable along the snare wire axis, allowing dynamic adjustment of the snare wire's pressing position against the tissue. This enables repositioning without removing clips, resolving the contradiction between secure holding and time-consuming repositioning.
Solution Approach 2:
The pressing mechanism is divided into a pressing member and a snare wire that can move independently relative to each other. The pressing member can be positioned at different locations along the snare wire to press at multiple points, enabling flexible adjustment while maintaining secure tissue attachment.
2Adaptability or versatility
If the snare wire is pressed against tissue at multiple positions along its axis, then the snare wire can be adjusted to accommodate irregular tissue surfaces, but the structure becomes more complex
Solution Approach 1:
The pressing function is segmented into multiple independent pressing points along the snare wire axis. Each pressing point can be independently positioned and adjusted, allowing adaptation to irregular tissue surfaces without requiring a completely complex multi-component system.
Solution Approach 2:
The pressing member serves multiple functions: it can press the snare wire against the tissue at different positions, allow for positioning adjustments, and work with the clip mechanism. This multi-functionality achieves adaptability without proportionally increasing structural complexity.
Data Source
AI summary
In a tissue binding method, a ring-shaped part (15) of a snare wire (10b) is disposed at a position surrounding a binding target site, the tissue at the binding target site is pulled while the ring-shaped part (15) is pressed against the tissue around the binding target site at a plurality of pressing points that are located away from each other in the circumferential direction of the ring-shaped part (15), and, in a state in which the tissue at the binding target site is pulled, the diameter of the ring-shaped part (15) is reduced to bind the tissue, while adjusting the position in the pressing direction at one or more of the pressing points.