一种新型冠脉乳突球囊及血管内扩张力学研究

      A Novel Coronary Knobby Scoring Balloon and Mechanical Study of Intravascular Dilation

      • 摘要: 针对一种新型冠脉乳突球囊,利用有限元分析方法和体外防滑测试探究了其在多种血管条件下的扩张过程,并与其他种类球囊对比。有限元分析结果显示,在健康血管和具有不同狭窄率的病变血管情况下,乳突球囊对血管造成的应力均显著小于刻痕球囊,和普通球囊接近。体外防滑测试表明,在名义压力下,普通球囊滑移量为0.11 ± 0.06 mm,而乳突球囊无滑移。乳突球囊可以在实现有效扩张钙化病变的同时提供一定的防滑效果,且具有较小的血管损伤风险。

         

        Abstract: A novel coronary knobby scoring balloon was used to investigate its dilation process under various vascular conditions using finite element analysis (FEA) and in vitro anti-slippage testing, and compared with other balloons. The FEA results indicated that in the case of healthy artery and diseased artery with different stenosis rates, the stress on the vessels caused by the knobby scoring balloon was significantly smaller than that of the scoring balloon, and was close to that of the plain balloon. In vitro anti-slippage testing showed that the slippage distance of a plain balloon was 0.11 ± 0.06 mm, and there was no slippage for knobby scoring balloon under nominal pressure. Knobby scoring balloon can effectively expand calcified lesion while providing anti-slippage function, and has a lower risk of vascular injury.

         

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