Endovascular Repair of Abdominal Aortic Aneurysms

Kaufman, John A.; Geller, Stuart C.; Brewster, David C.; Fan, Chia‐Ming; Cambria, Richard P.; LaMuraglia, Glenn M.; Gertler, Jonathan P.; Abbott, William M.; Waltman, Arthur C.

doi:10.2214/ajr.175.2.1750289

Cited by 73 publications

(20 citation statements)

References 100 publications

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“…A stent graft is an intraluminal device that consists of a supporting framework made of metal like stainless steel or nitinol and a synthetic graft material. The stent may be located inside, outside or within the graft material and it may be along the entire length of the graft or limited almost to its ends [6]. The evaluation of stents on MDCT depends on the type of stent.…”

Section: Discussionmentioning

confidence: 99%

“…Endoleaks denote persistent or recurrent flow into the aneurysm which occurs in 6 to 44 % cases [6]. They can persist causing loosening of the stent and progressive enlargement of the aneurysms and are treated by embolization and arterial stenting.…”

Section: Discussionmentioning

confidence: 99%

“…Rieker et al [6], evaluated the accuracy of CT angiography for assessment of stenosis and occlusions of the iliac arteries, in a study of 30 patients. Axial scans recognized 14 of 15 high-grade (> 75%) stenosis, while one case of short stenosis was overlooked.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Multidetector CT Evaluation in Arterial Stenting

Indrajit¹,

Souza²,

Bedi

et al. 2006

Medical Journal Armed Forces India

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Multidetector CT Evaluation in Arterial Stenting

Indrajit¹,

Souza²,

Bedi

et al. 2006

Medical Journal Armed Forces India

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“…Practical applications of SMA in medicine are seen particularly in vascular medicine [107][108][109][110][111], dentistry [112,113], orthopedics [114][115][116], and other related areas [117][118][119][120]. In this section, the application of SMA actuators in the biomedical field is presented.…”

Section: Micromechanism Device For Biomedical Applicationsmentioning

confidence: 99%

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

2015

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Shape memory alloys (SMAs) are a class of smart materials characterized by shape memory effect and pseudo-elastic behavior. They have the capability to retain their original form when subjected to certain stimuli, such as heat or a magnetic field. These unique properties have attracted many researchers to seek their application in various fields including transportation, aerospace, and biomedical. The ease process adaption from semiconductor manufacturing technology provides many opportunities for designing micro-scale devices using this material. This paper gives an overview of the fabrication and manufacturing technique of thin-film and bulk micromachined SMAs. Key features such as material properties, transformation temperature, material composition, and actuation method are also presented. The application and micromechanism for both thin-film and bulk SMA are described. Finally, the microactuator devices emphasized for biomedical applications such as microgrippers and micropumps are highlighted. The presented review will provide information for researchers who are actively working on the development of SMA-based microscale biomedical devices.

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“…The pseudoelasticity property is very important in the peripheral stent which is subjected to possible squeezing manoeuvres such as muscle contractions. Another successful application of the NiTi alloys is the use of the stent-graft for the treatment of abdominal aortic aneurisms (AAA) [54][55][56]. An aneurism is a permanent dilatation of a portion of an arterial vessel because of vessel wall alterations.…”

Section: Sma Applications In the Vascular Fieldmentioning

confidence: 99%

Biomedical Applications of Shape Memory Alloys

Petrini

Migliavacca

2011

Journal of Metallurgy

464

200

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Shape memory alloys, and in particular NiTi alloys, are characterized by two unique behaviors, thermally or mechanically activated: the shape memory effect and pseudo-elastic effect. These behaviors, due to the peculiar crystallographic structure of the alloys, assure the recovery of the original shape even after large deformations and the maintenance of a constant applied force in correspondence of significant displacements. These properties, joined with good corrosion and bending resistance, biological and magnetic resonance compatibility, explain the large diffusion, in the last 20 years, of SMA in the production of biomedical devices, in particular for mini-invasive techniques. In this paper a detailed review of the main applications of NiTi alloys in dental, orthopedics, vascular, neurological, and surgical fields is presented. In particular for each device the main characteristics and the advantages of using SMA are discussed. Moreover, the paper underlines the opportunities and the room for new ideas able to enlarge the range of SMA applications. However, it is fundamental to remember that the complexity of the material and application requires a strict collaboration between clinicians, engineers, physicists and chemists for defining accurately the problem, finding the best solution in terms of device design and accordingly optimizing the NiTi alloy properties.

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Endovascular Repair of Abdominal Aortic Aneurysms

Cited by 73 publications

References 100 publications

Multidetector CT Evaluation in Arterial Stenting

Multidetector CT Evaluation in Arterial Stenting

Micromachined Shape-Memory-Alloy Microactuators and Their Application in Biomedical Devices

Biomedical Applications of Shape Memory Alloys

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