Surgical Textile Barbs Deactivated by Protective Loops
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Solution Overview
Problem
Surgical textiles with barbs face challenges during implantation, including difficulty in deployment and repositioning due to barb entanglement and potential damage during minimally invasive surgery.
Innovation Solution
A surgical textile with barbs that can be deactivated by loops, allowing the textile to be easily introduced and deployed without damaging the barbs or surrounding tissues, and enabling easy repositioning by activating the barbs only when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If barbs are present on the surgical textile to enable direct gripping to biological tissue, then the textile can be fixed without conventional attaching means, but the barbs may stick to adjacent tissues during conveyance and make deployment difficult
Solution Approach 1:
The patent applies preliminary action by providing protective caps on the barbs before implantation. These caps prevent the barbs from sticking to adjacent tissues during conveyance through the trocar and deployment, and are removed only when the textile reaches the implantation site, allowing the barbs to then grip the biological tissue effectively.
Solution Approach 2:
The protective caps serve as intermediaries between the barbs and the surrounding environment during conveyance and deployment. They mediate the interaction by preventing unwanted contact between barbs and adjacent tissues, while allowing the barbs to perform their gripping function once the caps are removed at the implantation site.
2Reliability
If barbs are present on the surgical textile to enable direct gripping to biological tissue, then fixation is achieved without staples or sutures, but the barbs may become entangled in the textile body and hinder deployment
Solution Approach 1:
The protective caps are applied to the barbs in advance, before the textile is conveyed and deployed. This preliminary protective action prevents the barbs from becoming entangled in the textile body during deployment, while not interfering with the textile's structural integrity or the barbs' gripping function once deployed.
Solution Approach 2:
The protective caps act as intermediaries that prevent direct interaction between the barbs and the textile body during deployment. This mediation eliminates entanglement issues while allowing the barbs to function normally for gripping biological tissue after the caps are removed at the implantation site.
3Ease of manufacture
If barbs are present on the surgical textile for direct tissue gripping, then conventional attaching means are eliminated, but the barbs may be damaged during unrolling or transportation through the trocar
Solution Approach 1:
The protective caps provide beforehand cushioning and protection for the barbs during transportation through the trocar and during unrolling at the implantation site. This prior protection prevents damage to the barbs, ensuring they remain intact and functional for gripping biological tissue after deployment.
Solution Approach 2:
The protective caps serve as intermediaries that shield the barbs from mechanical damage during conveyance and deployment. They absorb or distribute mechanical stresses that would otherwise directly affect the barbs, preventing bending, breaking, or deformation.
4Object-affected harmful factors
If barbs are present on the surgical textile to enable direct gripping, then fixation is achieved without trauma from staples or sutures, but the textile becomes difficult to reposition once on the implantation site
Solution Approach 1:
The protective caps are maintained on the barbs during conveyance and initial positioning at the implantation site, allowing the textile to be easily repositioned without the barbs engaging with tissues. Once the optimal position is achieved, the caps are removed to activate the gripping function, securing the textile in place without requiring repositioning.
Solution Approach 2:
The protective caps mediate between the barbs and biological tissues during positioning, preventing premature gripping that would make repositioning difficult. This intermediary protection allows the surgeon to adjust the textile position freely, and only after optimal positioning is achieved do the barbs engage with the tissues to provide secure fixation.
Data Source
Figure 1A~1C
Figure 1D~1E
Figure 2~3
AI summary
The present invention relates to a surgical textile (1) comprising an arrangement of biocompatible yarns defining a first face (2) and a second face (3) of the textile, the second face opposite the first face, the textile being provided at least on an area of a surface of one of its faces with a plurality of barbs (4) showing substantially a first length L1, measured perpendicularly to that surface, characterised in that said area of said surface is further provided with a plurality of loops (5), said loops showing substantially a second length L2, measured perpendicularly to that surface, where L2 is greater than L1. The invention further relates to a process for manufacturing such a textile.