Evaluation of mechanical properties of self-expanding metal stents for optimization of tracheal collapse in dogs.

IF 1.1 4区 农林科学 Q2 Veterinary Canadian journal of veterinary research = Revue canadienne de recherche veterinaire Pub Date : 2022-07-01
Ji-Hyun Kim, Jin-Young Choi, Hun-Young Yoon
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Abstract

The objective of this study was to compare the mechanical properties, including radial, axial, and bending forces, of various self-expanding metal stents with different wire diameters. The radial forces generated through longitudinal and cylindrical compression, along with axial and bending forces, were measured and used to evaluate the mechanical properties of 3 types of self-expanding metal stents (n = 3); the most suitable type was further assessed with 4 different wire diameters (n = 3). The D-type stent (double-wire woven uncovered nitinol stent) had the highest radial force and the lowest axial force and hence, was the most suitable for clinical use; however, its bending force was the lowest, corroborating the results of the axial force measurements. Therefore, the D-type stent was further evaluated using the following wire diameters: i) 0.127, ii) 0.152, iii) 0.178, and iv) 0.203 mm. When the wire diameter was increased by 0.025 mm, the measured radial, axial, and bending forces increased significantly. Thus, the adequate wire diameter should be determined based on the anatomical structure of stents. The mechanical properties of self-expanding stents should be considered in selecting the optimal design for tracheal collapse in dogs.

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优化犬气管塌陷的自膨胀金属支架力学性能评价。
本研究的目的是比较不同钢丝直径的自膨胀金属支架的力学性能,包括径向、轴向和弯曲力。测量经纵向和圆柱压缩产生的径向力以及轴向和弯曲力,评价3种自膨胀金属支架的力学性能(n = 3);采用4种不同丝径(n = 3)进一步评估最适合的支架类型。d型支架(双丝编织无盖镍钛诺支架)径向力最大,轴向力最低,最适合临床使用;然而,它的弯曲力是最低的,证实了轴向力测量的结果。因此,d型支架采用以下丝径进行进一步评价:i) 0.127, ii) 0.152, iii) 0.178, iv) 0.203 mm。当线材直径增加0.025 mm时,测得的径向、轴向和弯曲力显著增加。因此,应根据支架的解剖结构确定合适的丝径。自膨胀支架的力学性能是选择犬气管塌陷最佳支架设计时应考虑的因素。
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来源期刊
CiteScore
1.80
自引率
0.00%
发文量
58
审稿时长
>24 weeks
期刊介绍: The Canadian Journal of Veterinary Research, published by the Canadian Veterinary Medical Association, is Canada''s only veterinary research publication. This quarterly peer-reviewed online-only journal has earned a wide international readership through the publishing of high quality scientific papers in the field of veterinary medicine. The Journal publishes the results of original research in veterinary and comparative medicine.
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