Polyethylene Terephthalate and Polyurethane Coatings for Endovascular Stents: Preliminary Results in Canine Experimental Arteriovenous Fistulas

Schellhammer, F.; Walter, Michael; Berlis, Ansgar; Bloss, Heinz-Georg; Wellens, Eckhard; Schumacher, Martin

doi:10.1148/radiology.211.1.r99ap14169

Cited by 19 publications

(7 citation statements)

References 20 publications

(36 reference statements)

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“…Two reference materials, polyurethane and PET, are known for moderate and high degree of platelet attachment, respectively 42–44 . These materials were used as positive controls.…”

Section: Discussionmentioning

confidence: 99%

Hemocompatibility of polymers for use in vascular endoluminal implants

Ammann

Hossainy

et al. 2021

J of Applied Polymer Sci

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Implanted polymers for cardiovascular applications may function as structural supports, barriers, or provide a means for local drug delivery. Several thermoplastic biodegradable drug delivery polymers are potential candidates for blood‐contacting implant applications. For intravascular applications specifically, a criterion for material selection is the intrinsic hemocompatibility of the baseline polymer. As an initial screening approach for selection of polymers for in vivo use, thin films of polyesters: poly(ɛ‐caprolactone) (PCL), poly(lactic acid) (PLA), poly(lactic‐co‐glycolic acid) (PLGA); polyanhydrides: poly(fatty acid dimer‐co‐sebacic acid) (PFAD:SA) and poly(biscarboxyphenoxypropane‐co‐sebacic acid) (PCPP:SA); and poly(ethylene glycol) (PEG)‐ylated polyesters: PLA:PEG, PCL:PEG and PCL:PLA:PEG polymers were spin‐cast on glass cover slips and placed in an in vitro flow system exposing them at a controlled shear to overflowing human whole blood. Platelet adherence, aggregate formation, and thrombus formation, as well as leukocyte adherence were assessed following 5 min of flow. At 5 min of flow the rank order of materials, in terms of least to most thrombogenic was: PCL < PFAD:SA < PCPP:SA < PLGA < PLA. All PEGylated materials, in general, had less thrombus formation than baseline unmodified materials.

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“…Two reference materials, polyurethane and PET, are known for moderate and high degree of platelet attachment, respectively 42–44 . These materials were used as positive controls.…”

Section: Discussionmentioning

confidence: 99%

Hemocompatibility of polymers for use in vascular endoluminal implants

Ammann

Hossainy

et al. 2021

J of Applied Polymer Sci

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“…Slow passive dissolution of nickel ion from the protective oxide layers takes place in even the most corrosion resistant, passivated metals. 13,[15][16][17][18] This is so minimal that it is of no clinical significance.…”

Section: Discussionmentioning

confidence: 99%

Corrosive behaviour of Amplatzer® devices in experimental and biological environments

et al. 2002

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Nitinol wire of Amplatzer septal occlusion devices is resistant to corrosion when exposed to physiologic saline solution, and in experimental animals as well as humans. A device in contact with a platinum pacemaker electrode developed minimal pitting of the titanium oxide layer, believed to be galvanic in nature and of no structural or clinical significance. There is no increase of concentrations of nickel in the blood of patients who have received Amplatzer nitinol devices. These favorable testing results reveal that nickel-titanium is an inert, corrosion resistant alloy.

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“…However, the disadvantage of such biomaterials is the metal ions release, such as Ni, Ti, Ag, hence, coating of metallic materials plays an important role in such problems [ 92 , 93 ]. Although various coatings are being tried on metallic biomaterials, especially nitinol (NiTi), producing a successful coating has been always a challenge [ 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 ]. Notable disadvantages of polymer coating include toxicity of the component’s roughness, porosity, and detachment of the coatings [ 108 ].…”

Section: Graphene Coating Applicationsmentioning

confidence: 99%

Graphene for Antimicrobial and Coating Application

Srimaneepong

Skallevold

Khurshid

et al. 2022

IJMS

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Graphene is a versatile compound with several outstanding properties, providing a combination of impressive surface area, high strength, thermal and electrical properties, with a wide array of functionalization possibilities. This review aims to present an introduction of graphene and presents a comprehensive up-to-date review of graphene as an antimicrobial and coating application in medicine and dentistry. Available articles on graphene for biomedical applications were reviewed from January 1957 to August 2020) using MEDLINE/PubMed, Web of Science, and ScienceDirect. The selected articles were included in this study. Extensive research on graphene in several fields exists. However, the available literature on graphene-based coatings in dentistry and medical implant technology is limited. Graphene exhibits high biocompatibility, corrosion prevention, antimicrobial properties to prevent the colonization of bacteria. Graphene coatings enhance adhesion of cells, osteogenic differentiation, and promote antibacterial activity to parts of titanium unaffected by the thermal treatment. Furthermore, the graphene layer can improve the surface properties of implants which can be used for biomedical applications. Hence, graphene and its derivatives may hold the key for the next revolution in dental and medical technology.

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Polyethylene Terephthalate and Polyurethane Coatings for Endovascular Stents: Preliminary Results in Canine Experimental Arteriovenous Fistulas

Cited by 19 publications

References 20 publications

Hemocompatibility of polymers for use in vascular endoluminal implants

Hemocompatibility of polymers for use in vascular endoluminal implants

Corrosive behaviour of Amplatzer® devices in experimental and biological environments

Graphene for Antimicrobial and Coating Application

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