Coronary stents: A materials perspective

Mani, Gopinath; Feldman, Marc D.; Patel, D.J.; Agrawal, C. Mauli

doi:10.1016/j.biomaterials.2006.11.042

Cited by 759 publications

(552 citation statements)

References 234 publications

(289 reference statements)

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“…aircraft wings and smart helicopter blades) and medical (e.g. arterial stents and catheters) industries [1][2]. SMA has two unique properties, namely, Superelastic Effect (SE) and Shape Memory Effect (SME) [3].…”

Section: Introductionmentioning

confidence: 99%

Superelastic SMA Belleville washers for seismic resisting applications: experimental study and modelling strategy

Fang

Zhou

Osofero

et al. 2016

Smart Mater. Struct.

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This study sheds considerable light on the potential of superelastic Shape Memory Alloy (SMA) Belleville washers for innovative seismic resisting applications. A series of experimental studies were conducted on washers with different stack combinations under varying temperatures and loading scenarios. The washers showed satisfactory self-centring and energy dissipation capacities at room temperature, although slight degradations of the hysteretic responses accompanied by residual deformations were induced. The hysteretic loops became stable after a few number of cycles, indicating good repeatability. The washers also showed good flexibility in terms of load resistance and deformation, which could be easily varied via changes in the stack combination. Compromised selfcentring responses were observed at temperatures below 0 °C or above 40 °C, and a numerical study, validated by the experimental results, was adopted to further investigate the deformation mechanism of the washers. A further phenomenological model, taking account of the degradation effects under varied temperatures, was developed to enable effective and accurate simulation of devices incorporating the washers. Good agreements were observed between the test and simulation results, and the model was shown to have good numerical robustness for wide engineering applications.

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Section: Introductionmentioning

confidence: 99%

Superelastic SMA Belleville washers for seismic resisting applications: experimental study and modelling strategy

Fang

Zhou

Osofero

et al. 2016

Smart Mater. Struct.

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“…The vast majority of coronary stents are manufactured from 316L stainless steel for its superior corrosion resistance and well-suited mechanical properties (Ref [10][11][12]. Many medical devices, including stents, are primary processed via casting and subsequent thermo-mechanical processing to achieve the required shape and mechanical properties (Ref 13).…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Stainless Steel 316L Coatings Produced by Cold Spray for Biomedical Applications

AlMangour

Mongrain

et al. 2014

J Therm Spray Tech

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In this study, the effects of heat treatment on the microstructure and mechanical properties of cold sprayed stainless steel 316L coatings using N 2 and He as propellant gases were investigated. Powder and coating characterizations, including coating microhardness, coating porosity, and XRD phase analysis were performed. It was found that heat treatment reduced porosity, improved inter-particle bonding, and increased ductility. XRD results confirmed that no phase transformation occurred during deposition. Significant increase in UTS and ductility was observed for the annealed specimens obtained with nitrogen propellant, whereas little changes were observed for the helium propellant produced specimen.

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“…It has also excellent specific strength and a low density, only 2/3 that of aluminium, so Mg and its alloys can be used in many applications including computer parts, mobile phones, aerospace components, handheld tools and so on [1][2]. Magnesium alloys are also potentially useful for bone implants and stent applications due to their low density, inherent biocompatibility and adequate mechanical properties including a fracture toughness higher than that of ceramics [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Corrosion behaviour of AZ31 magnesium alloy with different grain sizes in simulated biological fluids☆

et al. 2010

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The comparative study of the corrosion behaviour of the AZ31 magnesium alloy with different grain sizes immersed in simulated body fluids was made in chloride solutions (8g/L) and Phosphate Buffer-containing Solution (PBS). The influence of the immersion time was also analysed. Electrochemical techniques such as the open circuit potential, polarization curves, current transients and electrochemical impedance spectroscopy, complemented with scanning electron microscopy and energy dispersive spectroscopy were used. Immediately after the immersion in the corrosive media the corrosion resistance was similar for both grain sizes of the AZ31 alloy and higher in 2 NaCl solutions than in PBS. However, this corrosion behaviour was reversed after longer periods of immersion due to the stabilizing of the corrosion products of MgO and/or Mg(OH) 2 with P-containing compounds. These P-compounds contribute to a higher level of protection by hindering the aggressive action of chloride ions. The best corrosion behaviour of the AZ31 alloy was obtained for the finest grain alloy associated with the highest transfer resistance value, after long periods of immersion in PBS.

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Coronary stents: A materials perspective

Cited by 759 publications

References 234 publications

Superelastic SMA Belleville washers for seismic resisting applications: experimental study and modelling strategy

Superelastic SMA Belleville washers for seismic resisting applications: experimental study and modelling strategy

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Stainless Steel 316L Coatings Produced by Cold Spray for Biomedical Applications

Corrosion behaviour of AZ31 magnesium alloy with different grain sizes in simulated biological fluids☆

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