Fundamentals of bare-metal stents

Saraf, Atul R.; Yadav, Shivam

doi:10.1016/b978-0-08-100496-8.00002-0

Cited by 7 publications

(2 citation statements)

References 19 publications

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“…The first coronary stent was implanted in 1986 and became the inception point for the first generation of BMSs [ 6 , 7 ]. These devices were usually fabricated from corrosion-resistant materials, such as stainless steel (316L), cobalt-chromium (Co-Cr), platinum-iridium (Pt-Ir) alloys, tantalum (Ta) or nitinol (Ni-Ti), and were permanently implanted [ 30 , 31 , 32 , 33 ].…”

Section: Evolution Of Cardiovascular Stentsmentioning

confidence: 99%

Cardiovascular Stents: A Review of Past, Current, and Emerging Devices

et al. 2021

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One of the leading causes of morbidity and mortality worldwide is coronary artery disease, a condition characterized by the narrowing of the artery due to plaque deposits. The standard of care for treating this disease is the introduction of a stent at the lesion site. This life-saving tubular device ensures vessel support, keeping the blood-flow path open so that the cardiac muscle receives its vital nutrients and oxygen supply. Several generations of stents have been iteratively developed towards improving patient outcomes and diminishing adverse side effects following the implanting procedure. Moving from bare-metal stents to drug-eluting stents, and recently reaching bioresorbable stents, this research field is under continuous development. To keep up with how stent technology has advanced in the past few decades, this paper reviews the evolution of these devices, focusing on how they can be further optimized towards creating an ideal vascular scaffold.

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Section: Evolution Of Cardiovascular Stentsmentioning

confidence: 99%

Cardiovascular Stents: A Review of Past, Current, and Emerging Devices

et al. 2021

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“…Although compressive strength is an important factor in the fabrication of stents, the dynamic mechanical behavior presents higher importance when the device is implanted. As mentioned previously in the requirements for vascular stents, the bloodstream induces cyclic stresses (cyclic loads), which lead to fatigue failure and compromise the long-term durability of the device [ 16 , 27 ]. Thus, the best raster angle to be applied when printing vascular stents is 45°/−45° in order to ensure the stability and durability of vascular stents after implantation.…”

Section: Processing Parameters In Ammentioning

confidence: 99%

3D Printing of Polymeric Bioresorbable Stents: A Strategy to Improve Both Cellular Compatibility and Mechanical Properties

2022

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One of the leading causes of death is cardiovascular disease, and the most common cardiovascular disease is coronary artery disease. Percutaneous coronary intervention and vascular stents have emerged as a solution to treat coronary artery disease. Nowadays, several types of vascular stents share the same purpose: to reduce the percentage of restenosis, thrombosis, and neointimal hyperplasia and supply mechanical support to the blood vessels. Despite the numerous efforts to create an ideal stent, there is no coronary stent that simultaneously presents the appropriate cellular compatibility and mechanical properties to avoid stent collapse and failure. One of the emerging approaches to solve these problems is improving the mechanical performance of polymeric bioresorbable stents produced through additive manufacturing. Although there have been numerous studies in this field, normalized control parameters for 3D-printed polymeric vascular stents fabrication are absent. The present paper aims to present an overview of the current types of stents and the main polymeric materials used to fabricate the bioresorbable vascular stents. Furthermore, a detailed description of the printing parameters’ influence on the mechanical performance and degradation profile of polymeric bioresorbable stents is presented.

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