An overview of braiding structure in medical textile

Aibibu, Dilbar; Hild, Martin; Cherif, Chokri

doi:10.1016/b978-0-08-100407-4.00006-5

Cited by 8 publications

(7 citation statements)

References 61 publications

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“…Thus, a delamination of layers in the three-dimensional preform geometry is avoided and this significantly distinguishes 3D braids from 2D braids. Furthermore, the mentioned features of the 3D braiding technology allow the production of complex 3D braided structures for the medical sector [6,7,11].…”

Section: Three-dimensional Braiding Fabrics and Machine Typesmentioning

confidence: 99%

“…Furthermore, the mechanics and morphology of scaffolds can be adapted for tissue engineering applications. Three-dimensional hexagonal braiding offers new possibilities due to the flexibility of the process and the processability of wide-ranging materials [7,11].…”

Section: Medical Applicationsmentioning

confidence: 99%

“…On the one hand, this includes the material group of fiber-reinforced materials, which can be used for lightweight solutions [5]. On the other hand, medical products such as stents or synthetic ligaments represent a wide range of possible applications for the latest 3D braiding machine technology [6][7][8]. The historical developments indicate how important new innovations in machine technology continually establish new areas of application in the field of technical textiles [8].…”

Section: Introductionmentioning

confidence: 99%

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Innovation in 3D Braiding Technology and Its Applications

et al. 2021

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Braids are generally divided into 2D braids and 3D braids. Two-dimensional braids include flat braids and circular braids. Circular braids represent three-dimensional textiles, as they enclose a volume, but consist of a two-dimensional yarn architecture. Three-dimensional braids are defined by a three-dimensional yarn architecture. Historically, 3D braids were produced on row and column braiding machines with Cartesian or radial machine beds, by bobbin movements around inlay yarns. Three-dimensional rotary braiding machines allow a more flexible braiding process, as the bobbins are moved via individually controlled horn gears and switches. Both braiding machines at the Institut für Textiltechnik (ITA) of RWTH Aachen University, Germany, are based on the principal of 3D rotary machines. The fully digitized 3D braiding machine with an Industry 4.0 standard enables the near-net-shape production of three-dimensionally braided textile preforms for lightweight applications. The preforms can be specifically reinforced in all three spatial directions according to the application. Complex 3D structures can be produced in just one process step due to the high degree of design freedom. The 3D hexagonal braiding technology is used in the field of medical textiles. The special shape of the horn gears and their hexagonal arrangement provides the densest packing of the bobbins on the machine bed. In addition, the lace braiding mechanism allows two bobbins to occupy the position between two horn gears, maximizing the number of bobbins. One of the main applications is the near-net-shape production of tubular structures, such as complex stent structures. Three-dimensional braiding offers many advantages compared to 2D braiding, e.g., production of complex three-dimensional geometries in one process step, connection of braided layers, production of cross-section changes and ramifications, and local reinforcement of technical textiles without additional process steps. In the following review, the latest developments in 3D braiding, the machine development of 3D braiding machines, as well as software and simulation developments are presented. In addition, various applications in the fields of lightweight construction and medical textiles are introduced.

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Section: Three-dimensional Braiding Fabrics and Machine Typesmentioning

confidence: 99%

Section: Medical Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Innovation in 3D Braiding Technology and Its Applications

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“…Braided scaffolds have frequently been used for tubular or rope-like tissue engineering scaffolds because of their precise and predictable porous structure and adjustable performance to mimic natural structures and properties [73,74]. Extensive tissue ingrowth and mechanical characteristics that match natural tissues can be achieved with the appropriate selection of materials, braiding parameters and suitable pore size [75].…”

Section: Evaluation Of Braided Scaffoldsmentioning

confidence: 99%

Structural Design, Fabrication and Evaluation of Resorbable Fiber-Based Tissue Engineering Scaffolds

King¹,

Ji-yang²,

Deshpande³

et al. 2019

Biotechnology and Bioengineering

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The use of tissue engineering to regenerate viable tissue relies on selecting the appropriate cell line, developing a resorbable scaffold and optimizing the culture conditions including the use of biomolecular cues and sometimes mechanical stimulation. This review of the literature focuses on the required scaffold properties, including the polymer material, the structural design, the total porosity, pore size distribution, mechanical performance, physical integrity in multiphase structures as well as surface morphology, rate of resorption and biocompatibility. The chapter will explain the unique advantages of using textile technologies for tissue engineering scaffold fabrication, and will delineate the differences in design, fabrication and performance of woven, warp and weft knitted, braided, nonwoven and electrospun scaffolds. In addition, it will explain how different types of tissues can be regenerated by each textile technology for a particular clinical application. The use of different synthetic and natural resorbable polymer fibers will be discussed, as well as the need for specialized finishing techniques such as heat setting, cross linking, coating and impregnation, depending on the tissue engineering application.

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“…1 Classical applications of braiding are producing ropes, tubes or shoe laces. In recent years, modern braiding machines find even more applications in the field of medicine, 2 where complex forms can be produced and adjusted using the variation of paths, for instance, using the 3D braiding technique 3 or its smaller modern solutions, the so-named ‘variation braider’. 1,3 The main problem in the development of these structures is that the machine development and the carrier arrangement are done by trials and errors and the fundamental theoretical background is not well developed.…”

Section: Introductionmentioning

confidence: 99%

Extended horn gears in 3D maypole braiding

Kyosev

Gleßner

2018

Journal of Textiles and Fibrous Materials

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This article presents the theoretical background for the arrangement of horn gears in maypole braiding machines in order to act as equivalent larger gears. The theoretical analysis is verified with numerical simulation and experiments. After review about the state of the art, an analysis of the process for one specific configuration of horn gears is given. This analysis demonstrates how a set of horn gears can be arranged to work as an equivalent to a larger one horn gear. The braiding equation is checked as remaining valid for such extended configurations, too. The theoretical result is verified using numerical simulation for all cases and practical validation for several variants. The theoretical rules give a clear extension of the current braiding knowledge and make the design of complex configurations of braiding machines more systematic and clear.

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An overview of braiding structure in medical textile

Cited by 8 publications

References 61 publications

Innovation in 3D Braiding Technology and Its Applications

Innovation in 3D Braiding Technology and Its Applications

Structural Design, Fabrication and Evaluation of Resorbable Fiber-Based Tissue Engineering Scaffolds

Extended horn gears in 3D maypole braiding

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