Optimization of textile parameters of plain woven vascular prostheses

Mokhtar, Sofiene; Abdessalem, Saber Ben; Sakli, Faouzi

doi:10.1080/00405000903363597

Cited by 15 publications

(7 citation statements)

References 14 publications

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“…For example, Guidoin et al [ 29 ], Pourdeyhimi and Text [ 30 ] have shown in their investigations that permeability grows with the increase of the thread number in the bundles of the textile weave. According to the data obtained by Mokhtar et al [ 28 ], the increase of the thread number in the plain weave reduced prosthesis permeability. We believe that such unambiguous relation may be sought only for single-layer prostheses (not for double-layer) where a general rapport of the cloth has a significant effect on permeability.…”

Section: Discussionmentioning

confidence: 99%

“…When studying prostheses with a plain weave which differ in linear density and the number of fibers in the threads of the warp and weft, Mokhtar et al [ 28 ] have proved that porosity of the prosthesis does not correlate with permeability. High water permeability is believed by the authors to be associated with thin fibers in the warp threads, which increases the space between the threads and contributes to leakage.…”

Section: Discussionmentioning

confidence: 99%

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The Influence of Weaving Technologies on the Integral Characteristics of Synthetic Vascular Prostheses

Shadanov¹,

Timchenko²,

Vladimirov³

et al. 2022

Sovrem Tehnol Med

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The aim of the study is to determine physical and structural properties of woven synthetic prostheses depending on the type of the weave.Materials and Methods. Ten vascular prostheses manufactured at the Science and Technology Park of the BNTU "Polytechnic" (Minsk, Republic of Belarus) have been analyzed. The prostheses differed in the type of weaving, duration and temperature of thermal fixation during crimping. Three samples had a single-layer structure and 7 samples had a double-layer structure. Tests for water permeability, resistance to radial bending, and porosity of the prostheses have been performed.Results. The single-layer woven prostheses have demonstrated a low level of water permeability: the best result was shown by sample No.1: 80 [77.1; 80.5] ml/min/cm 2 . A strong direct correlation was revealed for these prostheses: the larger the pore diameter, the greater permeability (r=0.778; p=0.05). The single-layer woven prostheses appeared to be most resistant to radial bending, samples No.1 and 3 had no deformations at the minimum radius of the cylinder (R<4 mm), sample No.2 showed deformation on the cylinder with R=5 mm. For the single-layer prostheses, a strong negative correlation was noted (r=-0.97; p=0.04) between the density of the warp threads and the kinking radius.All double-layer prostheses have demonstrated higher water permeability and weak resistance to deformation during radial bending. Samples No.4 and 8 were found to have minimum and maximum water permeability of 276.5 [258.3; 288.4] and 538.8 [533.3; 564.3] ml/min/cm 2 , respectively. The minimum kinking radius (7 mm) was shown by samples No.9 and 10. The worst results were demonstrated by sample No.6, which was deformed with minimal bending.Conclusion. Samples with ordinary plain weave have a low level of water permeability and high resistance to radial deformation, which makes them look most promising for the application in vascular surgery.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Influence of Weaving Technologies on the Integral Characteristics of Synthetic Vascular Prostheses

Shadanov¹,

Timchenko²,

Vladimirov³

et al. 2022

Sovrem Tehnol Med

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“…In such plain-weave patterns, warp yarns lie alternately over and under weft ones thus conferring maximum interlacing points on fabric and therefore best mechanical performances among all types of weaves. 22,23 To improve both resistance to radial compression and kinking, the prosthetic tubes have been crimped by using the cord-winding technique minutely described in previous works. 18,24 The accordion pleats have been fixed on the prosthetic wall by steaming it at 170˚C for 1hour.…”

Section: Methodsmentioning

confidence: 99%

Development of a test bench assessing the hydrodynamic compliance of vascular prostheses

Khlif¹,

Dhouib²,

Maâtoug³

et al. 2018

JTEFT

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For more than sixty years, textile vascular grafts have saved millions human lives, but achieving attributes of a native artery still remains a challenge, especially in terms of parietal distensibility, commonly called compliance, necessary to transform intermittent blood ejection into steady and continuous flows. The graft compliance is, in part, related to the fabric contexture and the kind of yarns used in relation with the prosthetic finishing treatments. The objective of the present paper was to evaluate the mechanical behavior of prosthetic fabrics, made with various polyester multifilament yarns, subjected to fatigue stresses under realistic test conditions performed in vitro. For this purpose, cyclic tests have been applied to prosthetic tubes by using both mechanical testing machine and test bench specially developed for simulating the mechanical aging induced by water pressure on the prosthetic wall. This instrument allows the injection of pulsatile water adjustable in frequency and pressure in vascular grafts previously sealed by a rubber bladder while simultaneously monitoring the prosthesis wall distention by a high resolution displacement transducer linked to data acquisition software. Compliance curves thus made it possible to identify the highdistensibility prosthetic structures whose cyclic dilation could be maintained almost stable throughout the fatigue tests.

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“…14 The synthetic polymers described below are those most used in medical applications. 14,30,56,[48][49][50][51][52][53][54][55] Polyolefins. Polyolefins are plastic resins polymerized from propylene in the case of PP and ethylene in the case of PE.…”

Section: Polymeric Biomaterialsmentioning

confidence: 99%

Medical devices biomaterials – A review

Festas

Ramos

Davim

2019

Proceedings of the Institution of Mechanical Engineers, Part L:

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Due to the increase in the life expectancy of world’s population, health care demands in terms of quality and accessibility are higher than ever before. Concerning the manufacturing of medical devices, the development of new biomaterials, new manufacturing methods and techniques have always been on researchers focus. In the development of a medical device, the choice of the proper material to be used is of the most importance, since its ability and capacity to fulfil the expected function will determine the success of the medical device itself. This work aims to do a review of those that are the most commonly used biomaterials. After an explanation on what are biomaterials and what defines them, a more in-depth approach is presented to each of the four major types of biomaterials: metal, polymer, ceramic, and composites, where their main characteristics and preferred applications in the area of medical devices are described.

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Optimization of textile parameters of plain woven vascular prostheses

Cited by 15 publications

References 14 publications

The Influence of Weaving Technologies on the Integral Characteristics of Synthetic Vascular Prostheses

The Influence of Weaving Technologies on the Integral Characteristics of Synthetic Vascular Prostheses

Development of a test bench assessing the hydrodynamic compliance of vascular prostheses

Medical devices biomaterials – A review

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