The contemporary design of endovascular aneurysm stent-graft materials: PTFE versus polyester

Hynes, Niamh; Acharya, Yogesh; Sultan, Sherif

doi:10.3389/fsurg.2022.984727

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…Polyester-based cardiac stents have been shown to produce more inflammation and some degree of intradermal damage than similar polytetrafluoroethylene (PTFE) materials, and this inflammatory response leads to elevated serum levels of IL-8 and the development of malignant tumors. However, due to the lack of data at this time, researchers are unable to definitively state whether the reclusions of blood vessels caused by this material are due to the material itself or to the effects of the structural design and the endothelium of the bone [6].…”

Section: Polyestermentioning

confidence: 99%

Comparison of properties of cardiac vascular stent materials

Huang

2023

TNS

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Cardiovascular disease (CVD) is a serious threat to human health and life, an important public safety issue, and one of the leading causes of death in the world. Typically, the treatment involves implanting stents in the patient's blood vessels to support the vessels and keep the blood flow open so that oxygen and nutrients can be delivered. This paper will discuss and compare the three main categories of vascular stent materials: 1) organic materials; 2) inorganic materials; and 3) composite materials. Existing bio-organic materials are mostly organic materials that exist in large quantities in the human body and are mostly used as bio-coatings applied to metal bodies, in addition to polyester cardiovascular scaffolds, which are a major category for future development. Inorganic materials are currently the main components of cardiovascular scaffolds, mainly metals, and bio-ceramics. Metals, as the earliest basic materials utilized by mankind, also play a major role in cardiovascular scaffolds. To enhance some specific properties of existing cardiovascular scaffolds, composite materials have been developed, and in the field of materials engineering composite materials are regarded as a major project for future development. This paper will discuss the advantages and disadvantages of each material in turn and explore the future direction of materials in this field. The development of cardiac vascular stent materials will make up for the deficiencies in clinical medicine that cannot be solved by drug-based therapies and is an indispensable part of the development of human science and technology.

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Section: Polyestermentioning

confidence: 99%

Comparison of properties of cardiac vascular stent materials

Huang

2023

TNS

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Prevalence of type II endoleak after elective endovascular aneurysm repair with polytetrafluoroethylene- or polyester-based endografts

Kuijpers,

Holewijn,

Blankensteijn

et al. 2024

Journal of Vascular Surgery

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Nonlinearly elastic and anisotropic constitutive model for ePTFE vascular graft based on tensile and inflation experiments

Sobotka,

Horný,

Chlup

et al. 2024

Preprint

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The long-term success of interventions in cardiovascular medicine can be enhanced by the computer-assisted planning of these procedures. However, the reliability of all computational simulations depends significantly on the input parameters. One of the most important is the constitutive model for the biological tissue and for the implant material. While the last few decades have brought great advances in modelling the mechanical properties of the arterial wall, synthetic grafts have not received as much attention. The primary goal of our research is to contribute to filling this gap. Our study is focused on determining a constitutive model for ePTFE vascular grafts. Uniaxial tensile experiments with strips cut from tubular vascular grafts SA1802 (Gore-Tex Stretch Vascular Graft – Large diameter) in the circumferential and longitudinal direction, and pressurization experiments with intact graft tubes V06010L (Gore-Tex Vascular Graft – Standard-walled) were carried out. A nonlinearly elastic anisotropic model was used to describe the mechanical response observed in these experiments. The four-fiber hyperelastic model based on the exponential function combined with the neo-Hookean term was able to fit the data observed in both the uniaxial tensile and inflation-extension experiments with one single set of parameters. Thus, the resulting model is suitable to be used in numerical simulations studying surgical procedures involving ePTFE vascular grafts in the mechanical states of uniaxial as well as multiaxial stress.

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The contemporary design of endovascular aneurysm stent-graft materials: PTFE versus polyester

Cited by 3 publications

References 35 publications

Comparison of properties of cardiac vascular stent materials

Comparison of properties of cardiac vascular stent materials

Prevalence of type II endoleak after elective endovascular aneurysm repair with polytetrafluoroethylene- or polyester-based endografts

Nonlinearly elastic and anisotropic constitutive model for ePTFE vascular graft based on tensile and inflation experiments

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