Effects of Diamond-like-carbon Coating for ePTFE Artificial Vascular Graft as Arteriovenous Graft

Fujii, Yasuhiro; Goyama, Takashi; Muraoka, Genya; Ousaka, Daiki; Nakatani, Tatsuyuki; Uchida, Haruhito A.; Oozawa, Susumu

doi:10.1016/j.ejvs.2019.06.1065

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, they have been used for loadbearing and non-load-bearing invasive artificial implants. DLC-coated ePTFE-based artificial vascular grafts have also ensured patency [63]. There is a need for subsequent studies to systematically investigate how to improve the matrix and surface properties of vascular grafts to overcome existing limitations.…”

Section: Essential Factors For Composite Vascular-graft Designmentioning

confidence: 99%

Structural design and mechanical performance of composite vascular grafts

Zia

Liu

2022

Bio-des. Manuf.

View full text Add to dashboard Cite

This study reviews the state of the art in structural design and the corresponding mechanical behaviours of composite vascular grafts. We critically analyse surface and matrix designs composed of layered, embedded, and hybrid structures along the radial and longitudinal directions; materials and manufacturing techniques, such as tissue engineering and the use of textiles or their combinations; and the corresponding mechanical behaviours of composite vascular grafts in terms of their physical–mechanical properties, especially their stress–strain relationships and elastic recovery. The role of computational studies is discussed with respect to optimizing the geometrics designs and the corresponding mechanical behaviours to satisfy specialized applications, such as those for the aorta and its subparts. Natural and synthetic endothelial materials yield improvements in the mechanical and biological compliance of composite graft surfaces with host arteries. Moreover, the diameter, wall thickness, stiffness, compliance, tensile strength, elasticity, and burst strength of the graft matrix are determined depending on the application and the patient. For composite vascular grafts, hybrid architectures are recommended featuring multiple layers, dimensions, and materials to achieve the desired optimal flexibility and function for complying with user-specific requirements. Rapidly emerging artificial intelligence and big data techniques for diagnostics and the three-dimensional (3D) manufacturing of vascular grafts will likely yield highly compliant, subject-specific, long-lasting, and economical vascular grafts in the near-future. Graphic abstract

show abstract

Section: Essential Factors For Composite Vascular-graft Designmentioning

confidence: 99%

Structural design and mechanical performance of composite vascular grafts

Zia

Liu

2022

Bio-des. Manuf.

View full text Add to dashboard Cite

show abstract

“…It has been applied to coronary artery stents [4,5]. Recently, its application to small-diameter long tubes for medical use, such as artificial vascular grafts [6], ureteral stents [7], and catheters, has also been investigated. These smalldiameter long tubes for medical applications have been subjected to secondary processing, such as the addition of hydrophilic properties [8], because of issues such as stenosis and occlusion caused by thrombus and abnormal endothelial growth [9].…”

Section: Introductionmentioning

confidence: 99%

Ultra-hydrophilic Diamond-like Carbon Coating on an Inner Surface of a Small-diameter Long Tube with an Amino Group by AC High-voltage Plasma Discharge

Imai,

Fukue,

Nakatani

et al. 2023

J. Photopol. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Medical tubing includes artificial vascular grafts and catheters, each has a different purpose of use, but they both need to hydrophilize the lumen surface. Diamond-like carbon (DLC) is a dry coating technology, and its surface can be easily modified with hydrophilic functional groups. AC high-voltage plasma chemical vapor deposition has been developed for DLC deposition on the inner surface of small-diameter long tubes. In addition, oxygen plasma treatment of the DLC-deposited surface has been performed to enhance the hydrophilicity of the tube lumen and to inhibit biofilm adhesion in urinary catheters. However, the oxygen plasma treatment using silicone as the base material had only a slight inhibitory effect on biofilm adhesion, with a water contact angle of 104.4° for the DLC film and 90.6° for the DLC film, compared with oxygen plasma treatment, with an average value of 119.5° for the blank film. Recently, a new ammonia plasma treatment method has been developed, and an ultra-hydrophilic water contact angle of nearly 10° has been achieved with polyurethan (PU) as the base material. Furthermore, the zeta potential was found to be negative in oxygen plasma treatment and positive in ammonia plasma treatment, indicating that the hydrophilicity, and surface potential can be arbitrarily controlled by combining these plasmas, thereby achieving surface properties suitable for various applications.

show abstract

Optimizing diamond-like carbon coatings - From experimental era to artificial intelligence

Zia

Hussain

2022

Ceramics International

View full text Add to dashboard Cite

Effects of Diamond-like-carbon Coating for ePTFE Artificial Vascular Graft as Arteriovenous Graft

Cited by 3 publications

References 0 publications

Structural design and mechanical performance of composite vascular grafts

Structural design and mechanical performance of composite vascular grafts

Ultra-hydrophilic Diamond-like Carbon Coating on an Inner Surface of a Small-diameter Long Tube with an Amino Group by AC High-voltage Plasma Discharge

Optimizing diamond-like carbon coatings - From experimental era to artificial intelligence

Contact Info

Product

Resources

About