Suture Structure with Planar Barbs and Grooves for Tissue Lifting
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Solution Overview
Problem
Existing suture structures for thread lift procedures have insufficient structural strength due to damage from deep cutting for barb formation, and they cause pain due to sharp protrusions, while also lacking sufficient space to securely hold human body tissues.
Innovation Solution
A suture structure with a thread having barbs with a planar surface and adjacent grooves, where the barb height, width, and groove length and depth are optimized to enhance structural strength, reduce pain risk, and improve tissue holding capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If deep cutting is applied to form barbs on the thread surface, then the barb structure can grip tissues effectively, but the structural strength of the thread is significantly damaged making it easy to break
Solution Approach 1:
The patent optimizes the cutting depth parameter to a specific range (0.2-0.5 times the thread diameter) rather than using deep cutting. This parameter change allows the barbs to achieve sufficient gripping capability while preserving the thread's structural strength and preventing excessive damage that would make it easy to break.
2Reliability
If sharp protrusions are used to grip human body tissues, then tissue holding capability is improved, but pain perception increases due to stabbing effect
Solution Approach 1:
The patent designs the barb surfaces with curved or rounded configurations instead of sharp protrusions. The barbs have a specific geometric shape with rounded edges that reduces the stabbing effect on tissues while maintaining effective gripping capability, thereby reducing pain perception during the lifting procedure.
3Strength
If small cut notches are used on the thread surface, then the thread structure is preserved, but insufficient space is provided for receiving and holding human body tissues
Solution Approach 1:
The patent optimizes the notch depth parameter to a specific range (0.2-0.5 times the thread diameter) that balances two requirements: deep enough to provide sufficient space for receiving and holding human body tissues, but not so deep as to compromise the thread's structural strength and cause easy breaking.
4Shape
If cutting depth reaches almost one half of the thread diameter to make barbs warp up, then barb protrusion is achieved, but significant damage is caused to the thread structure
Solution Approach 1:
The patent changes the cutting depth parameter from reaching almost one half of the thread diameter to a controlled range of 0.2-0.5 times the thread diameter. This parameter optimization ensures that barbs can still protrude and warp up effectively for tissue gripping, while significantly reducing the damage to the thread structure and maintaining its structural integrity.
Data Source
AI summary
Disclosed is a suture structure that enhances lifting effect, including: a thread having a thread diameter; a plurality of barbs arranged on a surface of the thread and including at least one planar surface; and a plurality of grooves arranged adjacent to the barbs at one side. The barbs have a barb height and a barb width, and the grooves have a groove length and a groove depth. The barb height is between 0.2-0.35 times of the thread diameter; the barb width is between 0.35-0.5 times of the thread diameter; the groove length is between 0.5-0.8 times of the thread diameter; and the groove depth is between 0.3-0.5 times of the thread diameter. The barbs are arranged on the surface of the thread, and the groove depth is 0.33 times of the thread diameter, so that the structural strength is relatively great.