Endoscope Forceps Elevator Positioning Bayonet Guide Groove
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Solution Overview
Problem
Conventional technologies face challenges in effectively and accurately positioning and fixing guide wires and other treatment instruments within the papilla during ERCP procedures, leading to risks of instrument displacement and complications during surgery.
Innovation Solution
An endoscopic forceps elevator with a positioning bayonet and guiding groove system that securely positions and fixes instruments by deflecting their extension direction and utilizing a clamping mechanism to prevent lateral movement, ensuring precise adjustment and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional forceps elevator structures are used, then the device is simple in structure, but the positioning precision and fixation reliability of treatment instruments are insufficient
Solution Approach 1:
The forceps elevator is divided into multiple functional segments: the guiding groove structure for initial positioning, the positioning bayonet for directional guidance, and the clamping portion with abutting and fixing member for final fixation. Each segment performs a specific positioning function, collectively achieving high positioning precision through modular segmentation.
Solution Approach 2:
The guiding groove acts as an intermediary structure that guides the treatment instrument from the instrument channel to the positioning bayonet. This intermediary component ensures smooth transition and preliminary positioning, reducing direct contact stresses and improving positioning accuracy.
2Reliability
If no guiding and positioning structures are used, then the device is simple to operate, but the guide wire and treatment instruments cannot be accurately positioned and fixed
Solution Approach 1:
The guiding groove and positioning bayonet perform preliminary positioning actions before the final clamping occurs. The treatment instrument is first guided into the positioning bayonet through the guiding groove, which pre-positions the instrument correctly before the clamping portion engages, ensuring reliable fixation with minimal operational complexity.
Solution Approach 2:
The forceps elevator employs dynamic positioning through the liftable clamping portion. The abutting and fixing member can move between clamped and released states, allowing the operator to easily engage or disengage the fixation mechanism while maintaining reliable positioning when clamped.
3Measurement precision
If the forceps elevator is made liftable with clamping mechanism, then the fixation accuracy is improved, but the device complexity increases
Solution Approach 1:
The guiding groove, positioning bayonet, and clamping portion are merged into a single integrated forceps elevator structure. This combination achieves high positioning accuracy through multiple built-in positioning features while avoiding the need for separate positioning devices, thereby limiting the increase in overall device complexity.
Data Source
AI summary
An endoscope forceps elevator. The bottom end of the endoscope forceps elevator communicates with an instrument channel and is provided with a hinge part that is hinged to a distal end base, and the top end thereof is provided with a positioning bayonet; and a guiding groove is formed between the instrument channel and the positioning bayonet. Before the endoscope forceps elevator being lifted, an instrument to be positioned may be guided into the positioning bayonet by the guiding groove and be laterally spaced and positioned. In the endoscope forceps elevator, the instrument to be positioned may be directly positioned by the positioning bayonet, the instrument to be positioned, such as a catheter or guide wire, may be precisely and effectively positioned during the process of lifting of the forceps elevator and during a surgery. Also disclosed are a corresponding endoscope distal end and duedenoscopy system.