Quo vadimus? Fundamental problems of developing hybrid prostheses of thoracic aorta

Журавлева, И. Ю.; Ляшенко, М. М.; Шаданов, А. А.; Сирота, Д. А.; Чернявский, А. М.

doi:10.33529/angio2021412

Cited by 2 publications

(2 citation statements)

References 45 publications

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“…There are no exact data in the open access on the application of synthetic vascular prostheses in Russia and in the world. However, only the demand in the prostheses for the reconstruction of thoracic and thoracoabdominal parts of aorta may be estimated at about 50,000 [ 11 ] in the world and 800 in Russia [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…The distance between the threads and fabric porosity depend on the needle size and thread diameter. Knitted prostheses possess higher porosity, softness, flexibility, and stretchability as compared to the woven prostheses, which is an advantage, on the one hand, while, on the other, often results in intraoperative bleeding, dilatation, and graft aneurisms [ 11 ]. Both woven and knitted prostheses are further subject to crimping to improve stretchability, flexibility and to preserve the internal lumen if the kinking radius increases.…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

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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Prospective evaluation of the extensibility of the ascending aorta wall and its vascular prosthesis in a patient with an aneurysm with technically flawless surgical correction and postoperative decrease in functional parameters. Clinical case and literature review.

Ussov,

Friedmann,

Bergen

et al. 2024

Digital Diagnostics

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A clinical case is presented and discussed when a patient with an instrumentally detected ascending aortic aneurysm with an expansion of the lumen up to 60 mm, after performing surgically flawless prosthetics, there was a marked decrease in exercise tolerance, a decrease in the contractile function of the left ventricular myocardium at rest, and an expansion of the pulmonary artery. It is shown that the leading factor was a decrease in the volume of systolic expansion of the aorta down to 5 ml, at the initial 13 ml, despite a noticeable increase in extensibility and a decrease in mechanical stiffness compared with initial indexes of the affected aortic wall. In this connection, the problems of creating aortic prostheses equivalent in terms of mechanical extensibility and elasticity to those for healthy biological tissues are discussed.

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Quo vadimus? Fundamental problems of developing hybrid prostheses of thoracic aorta

Cited by 2 publications

References 45 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

Prospective evaluation of the extensibility of the ascending aorta wall and its vascular prosthesis in a patient with an aneurysm with technically flawless surgical correction and postoperative decrease in functional parameters. Clinical case and literature review.

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