Ligation Clip Diagonal Ribs for Vessel Retention
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Solution Overview
Problem
Existing ligation clips often experience movement issues relative to body vessels during surgical procedures, affecting their performance and patient safety due to inadequate retention characteristics.
Innovation Solution
The ligation clip design features a pivotable first and second jaw configuration with a hinge portion, locking elements, and diagonal ribs on clamping surfaces to securely clamp and retain body vessels, minimizing movement post-placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional smooth clamping surfaces are used, then the device structure is simple, but the clip may move relative to the body vessel during surgical procedures
Solution Approach 1:
The clamping surfaces incorporate localized tissue retention features (ridges, grooves, or teeth) at specific regions where contact with the body vessel occurs. These features are not uniformly distributed but concentrated at critical contact zones, providing enhanced grip where needed while maintaining overall structural simplicity of the clip design.
Solution Approach 2:
The clamping surface is divided into multiple functional zones including smooth portions for general contact and textured portions with retention features for secure grip. This segmentation allows different regions of the clamping surface to perform specialized functions, improving overall retention while managing complexity through functional zonation.
2Reliability
If tissue retention features are added to clamping surfaces, then clip movement is reduced, but manufacturing complexity increases
Solution Approach 1:
The tissue retention features are integrated directly into the clamping surface structure during the molding or fabrication process, rather than being added as separate components. This merging of retention features with the base clamping surface reduces assembly steps and simplifies manufacturing while maintaining the reliability benefits of enhanced tissue grip.
Solution Approach 2:
The clamping surface utilizes composite structural characteristics combining smooth and textured regions within a single material component. This allows the retention features to be formed as part of the monolithic clip structure, enabling standard manufacturing processes to produce both simple and complex surface characteristics without requiring multiple materials or assembly operations.
Data Source
Figure 1
Figure 2~2A
Figure 3~4
AI summary
A ligation clip (10) defines a longitudinal axis and includes a first jaw (12), a second jaw (14), and a hinge portion (16) that pivotably couples the first jaw (12) to the second jaw (14). The first jaw (12) has a first clamping surface (22) that supports first ribs (60) that defines an angle β with the longitudinal axis. The second jaw (14) has a second clamping surface (28) in opposition to the first clamping surface (22) and supports second ribs (60) that define the angle β with the longitudinal axis. Each of the first and second ribs (60) includes a distal wall and a proximal wall and a wall in opposition to the opposing clamping surface. The distal wall of at least some of the first ribs is positioned in close proximity to the proximal wall of a respective one of the second ribs when the ligation clip is in the clamped position.