Endoscope Forceps Elevator for Deflective Guide Wire Positioning
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Solution Overview
Problem
Conventional endoscopic instruments struggle to effectively and accurately clamp and fix guide wires and catheters that extend out deflectively, leading to their displacement from the papilla during ERCP procedures, hindering successful surgery.
Innovation Solution
An endoscopic forceps elevator with a hinge, positioning groove, shearing edge, and guiding surface, which guides and fixes instruments into a positioning groove using an abutting and fixing member, ensuring they remain in place during lifting and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the guide wire extends into the accommodating space via the instrument channel, then the guide wire can be inserted into the papilla, but the extending-out position of the guide wire becomes unfixed and may be deflected, causing it to fail to extend against the guiding groove and positioning bayonet
Solution Approach 1:
The forceps elevator is pre-configured with a positioning bayonet and guiding groove structure before the guide wire insertion. When the forceps elevator is lifted, these pre-positioned structures automatically guide the guide wire into the correct position, preventing deflection and ensuring reliable positioning without requiring additional adjustment steps.
Solution Approach 2:
The forceps elevator acts as an intermediary device between the instrument channel and the guide wire. By introducing this intermediate structure with guiding grooves and positioning bayonets, the system transforms the unfixed extending-out state into a controlled, positioned state, mediating the transition from insertion to stable positioning.
2Reliability
If the guide wire is deflected by internal organs during penetration, then it cannot be positioned by the forceps elevator, but adding positioning structures increases device complexity
Solution Approach 1:
The positioning function is segmented into distinct structural elements: guiding grooves for directional guidance, positioning bayonets for lateral positioning, and abutting surfaces for final fixation. This segmentation allows each component to perform a specific function, achieving reliable instrument fixation while keeping the overall structure manageable through functional decomposition.
Solution Approach 2:
The positioning system operates in multiple dimensions: the guiding groove controls the guide wire in the longitudinal dimension, the positioning bayonet provides lateral dimension control, and the abutting surface ensures vertical positioning. By utilizing multiple spatial dimensions, the system achieves comprehensive fixation without requiring overly complex single-dimension solutions.
3Ease of operation
If the forceps elevator is lifted to control extension angles, then instruments can reach the papilla, but deflective instruments cannot be guided into the positioning bayonet and remain unfixed
Solution Approach 1:
The guiding groove and positioning bayonet structures are pre-configured in the forceps elevator before the procedure. When the forceps elevator is lifted, these pre-positioned structures automatically guide deflective instruments into the correct trajectory and position, eliminating the need for precise manual positioning and ensuring accurate placement even with initial deflection.
Solution Approach 2:
The guiding surface and positioning bayonet serve as intermediary structures that mediate between the deflective instrument trajectory and the desired final position. These intermediate elements gradually guide the instrument from its deflected state into the correct positioning, bridging the gap without requiring direct precise alignment.
Data Source
AI summary
Disclosed are an endoscope forceps elevator, an endoscope distal end and a duodenoscope system. The bottom of the endoscope forceps elevator is in communication with an instrument channel and the endoscope forceps elevator is provided with a hinge part configured to be hinged with an endoscope distal end base; a positioning groove adapted to an instrument to be positioned is provided at the top of the endoscope forceps elevator; and a cutting edge and a guide surface are provided at a side of the endoscope forceps elevator, and the guide surface is located between the positioning groove and the cutting edge. The cutting edge is movable in contact with the inner side surface of the distal end base so as to guide the instrument to be positioned in a first deflected and extended state onto the guide surface.