Tissue Ligating Device Curved Wall Suture Guidance
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Solution Overview
Problem
The existing tissue ligating devices face challenges in guiding and securing suture threads efficiently, particularly in limited spaces, leading to increased operator and patient load during surgical procedures.
Innovation Solution
The design incorporates a second fixation part with an inclined or curved end part towards the front side and a flat plate-shaped part, and a third fixation part with symmetrical structures, facilitating easy guidance and crimping of the suture thread, thereby reducing the load on operators and improving postural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front side wall part is made straight and perpendicular to the back side wall part, then the structure is simple and easy to manufacture, but the suture thread is difficult to guide into the region between the walls
Solution Approach 1:
The end part of the front side wall part is designed to be curved or inclined towards the front side, creating a smooth guiding surface that facilitates the insertion and guidance of the suture thread into the region between the back side wall part and the front side wall part, resolving the contradiction between operational ease and structural simplicity
2Adaptability or versatility
If the suture thread is allowed to move freely due to elasticity, then the tissue can be accommodated, but the suture thread may leave the region between the walls causing positioning errors
Solution Approach 1:
The curved or inclined end part of the front side wall part creates a preliminary constraint that prevents the suture thread from leaving the region between the walls, counteracting the elastic movement before it can cause positioning errors, thus maintaining both adaptability and reliability
3Reliability
If the fixation part walls are made long and rigid, then the suture thread positioning is stable, but the operator experiences increased load and reduced operability in limited spaces
Solution Approach 1:
The curved or inclined end part of the front side wall part provides localized stability and guidance function, allowing the walls to be shorter overall while maintaining positioning stability, thereby reducing operator load and improving operability in limited surgical spaces
Data Source
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AI summary
A tissue ligating device comprises a first fixation part to which a base end part of a suture thread is fixed and a second fixation part configured to allow insertion of the suture thread therethrough and allow to be crimped so as to newly fix a part of the suture thread, and thereby to define a loop starting from the base end part, in a state after ligation of tissue is performed. The second fixation part includes a back side wall part, a front side wall part, and a curved wall part turning back from the back side wall part to the front side wall part. An end part of the front side wall part far from the curved wall part is inclined or curved towards a front side.