Chiral constrained stent: Effect of structural design on the mechanical and intravascular stent deployment performances

Ruan, Xiaoli; Yuan, Weixing; Hu, Yiqun; Li, Jiejie; Wu, Wenwang; Xia, Re

doi:10.1016/j.mechmat.2020.103509

Cited by 30 publications

(6 citation statements)

References 58 publications

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“…[51,261,262] 3) The applications in giant machinery, such as, aerospace, including smart load-bearing and anti-impact structures, [1,27,46,181,263] morphing airfoils, [264] acoustic stealth cloaks, [48,[225][226][227] elastic mechanical cloaks, [48] reconfigurable antenna, [24,180,265,266] terahertz metadevices, [267] electromagnetic stealth system. [268][269][270] 4) The applications in biomedicine include electronic skin, [258,[271][272][273][274][275] tissue engineering, [192,194,[276][277][278][279][280] vascular stents, [54,136,[281][282][283] drug delivery carriers. [136,210,284,285] From the above discussion, the rich functions and application value of AMMs have brought great convenience to human production and life.…”

Section: Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

“…[ 51 , 261 , 262 ] 3) The applications in giant machinery, such as, aerospace, including smart load‐bearing and anti‐impact structures, [ 1 , 27 , 46 , 181 , 263 ] morphing airfoils, [ 264 ] acoustic stealth cloaks, [ 48 , 225 , 226 , 227 ] elastic mechanical cloaks, [ 48 ] reconfigurable antenna, [ 24 , 180 , 265 , 266 ] terahertz metadevices, [ 267 ] electromagnetic stealth system. [ 268 , 269 , 270 ] 4) The applications in biomedicine include electronic skin, [ 258 , 271 , 272 , 273 , 274 , 275 ] tissue engineering, [ 192 , 194 , 276 , 277 , 278 , 279 , 280 ] vascular stents, [ 54 , 136 , 281 , 282 , 283 ] drug delivery carriers. [ 136 , 210 , 284 ,…”

Section: Functions and Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

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Recent Progress in Active Mechanical Metamaterials and Construction Principles

et al. 2021

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Active mechanical metamaterials (AMMs) (or smart mechanical metamaterials) that combine the configurations of mechanical metamaterials and the active control of stimuli-responsive materials have been widely investigated in recent decades. The elaborate artificial microstructures of mechanical metamaterials and the stimulus response characteristics of smart materials both contribute to AMMs, making them achieve excellent properties beyond the conventional metamaterials. The micro and macro structures of the AMMs are designed based on structural construction principles such as, phase transition, strain mismatch, and mechanical instability. Considering the controllability and efficiency of the stimuli-responsive materials, physical fields such as, the temperature, chemicals, light, electric current, magnetic field, and pressure have been adopted as the external stimuli in practice. In this paper, the frontier works and the latest progress in AMMs from the aspects of the mechanics and materials are reviewed. The functions and engineering applications of the AMMs are also discussed. Finally, existing issues and future perspectives in this field are briefly described. This review is expected to provide the basis and inspiration for the follow-up research on AMMs.

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Section: Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

Section: Functions and Practical Applications Of Active Mechanical Metamaterialsmentioning

confidence: 99%

Recent Progress in Active Mechanical Metamaterials and Construction Principles

et al. 2021

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“…Besides, the auxetic metamaterials also have many excellent mechanical properties, such as increased fracture toughness, increased indentation resistance and dome-shaped bending mode [15,16], which may particularly benefit the SE stents from different aspects. Although some explorations of the auxetic stents have been made [17][18][19][20], research considering both the SE mechanism and auxetic behavior is still rare [21]. The stent with dual properties of auxetic and SE effects may be helpful for further improvement by combining the advantages of each aspect.…”

Section: Introductionmentioning

confidence: 99%

A Novel Metamaterial-Based Stent with Dual Properties of Auxetic and Self-Expanding

Zhou

Sun

2023

J. Phys.: Conf. Ser.

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Vascular stents have been widely used in various cardiovascular diseases associated with atherosclerosis, while the potential risks of in-stent restenosis (ISR) and stent thrombosis (ST) still restrict its further development. Here, by combining the self-expanding (SE) mechanism and auxetic metamaterial, a novel SE stent called MBS was proposed and systematically studied. Through the finite element (FE) method, a stent-artery coupling model was established to study the crimping, expanding, and pulsating behaviors of the proposed MBS. Results show that the MBS well retains various advantages, including a large recoverable strain, a large radial resistance force (RRF), and a smaller radial opening force (ROF). Meanwhile, due to the auxetic effect of the adopted re-entrant honeycomb, the MBS shows a significant negative foreshortening behavior, which can be designed from about -5% to about -50%. Besides, fatigue analysis also shows that all strain-based points are within the design criteria. Geometric parameter of RE cell shows a great effect on the comprehensive performance of the MBS, which needs a further optimal design for ideal radial force, foreshortening effect and fatigue performance. In conclusion, the novel design is expected to improve the mechanical properties of the traditional stent, which should be given more attention in further research.

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“…Nevertheless, a paucity of data is available to compare mechanical performances in vitro. The mechanical properties of the stents, such as deliverability, radial force, recoil, foreshortening, and side branch access, are affected by their design and structure [ 11 , 12 ]. To produce coronary stents, slotted tube stents are commonly used [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of biodegradable polymer sirolimus and ascorbic acid eluting stent systems

Jo¹,

Youn²,

Kang³

et al. 2022

J Mater Sci: Mater Med

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The purpose of this study was to evaluate the performance of biodegradable polymer sirolimus and ascorbic acid eluting stent systems with four commercially available drug-eluting stents (DES). We investigated the characterization of mechanical properties by dimension, foreshortening, recoil, radial force, crossing profile, folding shape, trackability, and dislodgement force. Additionally, we identify the safety and efficacy evaluation through registry experiments. Each foreshortening and recoil of D + Storm® DES is 1.3 and 3.70%, which has better performance than other products. A post-marketing clinical study to evaluate the performance and safety of D + Storm® DES is ongoing in real-world clinical settings. Two hundred one patients were enrolled in this study and have now completed follow-up for up to 1 month. No major adverse cardiovascular event (MACE) occurred in any subjects, confirming the safety of D + Storm® DES in the clinical setting. An additional approximately 100 subjects will be enrolled in the study and the final safety profile will be assessed in 300 patients. In conclusion, this study reported the objective evaluation of DES performance and compared the mechanical responses of four types of DES available in the market. There is little difference between the four cardiovascular stents in terms of mechanical features, and it can help choose the most suitable stent in a specific clinical situation if those features are understood.

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Chiral constrained stent: Effect of structural design on the mechanical and intravascular stent deployment performances

Cited by 30 publications

References 58 publications

Recent Progress in Active Mechanical Metamaterials and Construction Principles

Recent Progress in Active Mechanical Metamaterials and Construction Principles

A Novel Metamaterial-Based Stent with Dual Properties of Auxetic and Self-Expanding

Performance evaluation of biodegradable polymer sirolimus and ascorbic acid eluting stent systems

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