中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (10): 2083-2090.doi: 10.12307/2024.528

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

有限元分析冠状动脉新型刻痕球囊的安全性及有效性

曹  政,郑晓新,蒋学俊   

  1. 武汉大学人民医院心内科,武汉大学心血管病研究所,心血管病湖北省重点实验室,湖北省武汉市  430060
  • 收稿日期:2023-08-31 接受日期:2023-11-04 出版日期:2025-04-08 发布日期:2024-08-22
  • 通讯作者: 蒋学俊,博士生导师,主任医师,武汉大学人民医院心内科,武汉大学心血管病研究所,心血管病湖北省重点实验室,湖北省武汉市 430060
  • 作者简介:曹政,男,1996年生,湖北省黄冈市人,汉族,硕士,医师,主要从事心血管介入以及器械方面的研究。

Finite element analysis of safety and efficacy of a novel scored balloon for coronary arteries

Cao Zheng, Zheng Xiaoxin, Jiang Xuejun   

  1. Department of Cardiology of Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei Province, China
  • Received:2023-08-31 Accepted:2023-11-04 Online:2025-04-08 Published:2024-08-22
  • Contact: Jiang Xuejun, Doctoral supervisor, Chief physician, Department of Cardiology of Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei Province, China
  • About author:Cao Zheng, Master, Physician, Department of Cardiology of Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Hubei Key Laboratory of Cardiology, Wuhan 430060, Hubei Province, China

摘要:

文题释义:
有限元分析:利用属性近似的方法对真实物理系统进行模拟,将复杂问题分解为简单而又互相作用的因素,用有限数量的未知量去逼近无限未知量的真实系统。
介入前的病变准备:是指通过半顺应性或非顺应性球囊来扩张狭窄病变及压缩病变斑块,进而使支架或者药物球囊更好地到达病变部位,同时增大支架或者药物球囊的贴壁程度。

背景:目前临床上使用的冠状动脉介入预扩张球囊主要是传统的高压球囊、乳突球囊等,它们在病变血管中可能会出现滑脱进而擦伤血管的情况。
目的:评估新型旋刻球囊在血管扩张中的安全性及有效性。
方法:①有限元分析:通过采集相关人体组织数据建立血管三维有限元模型,随后建立乳突球囊植入血管三维有限元模型与旋刻球囊植入血管三维有限元模型,分析不同充气压下球囊扩张时的血管应力、血管位移、球囊应力、球囊位移。②动物实验:将8只新西兰大耳兔随机分成2组,在髂动脉中分别植入乳突球囊与旋刻球囊进行扩张,每组4只。球囊撤出后取材,苏木精-伊红染色与透射电镜观察血管损伤情况。
结果与结论:①有限元分析:两种球囊的弹力性质无明显差异,在相同充气压下,乳突球囊组血管应力、血管位移、球囊应力、球囊位移均远远大于旋刻球囊组,并且各指标的均匀性优于旋刻球囊组;随着充气压的增加,乳突球囊组血管应力、血管位移、球囊应力、球囊位移增加幅度远远大于旋刻球囊组。②动物实验:苏木精-伊红染色与透射电镜观察显示,旋刻球囊扩张造成的血管损伤只局限在内膜,而乳突球囊扩张造成的血管损伤比较严重,内膜、中膜损伤严重,部分节段可以看到血肿形成,血管周围的炎性细胞较多,局部可见有巨噬细胞堆积。③结果表明:相较于乳突球囊扩张,旋刻球囊扩张造成血管闭塞以及夹层的风险较小,但有一定出现球囊弯曲的概率。
https://orcid.org/0000-0003-3333-2426(曹政)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 冠状动脉粥样硬化, 预扩张, 新型扩张球囊, 血管损伤, 有限元分析, 旋刻球囊

Abstract: BACKGROUND: Currently, the pre-dilatation balloons used in clinical coronary intervention are mainly the traditional high-pressure balloon and papillary balloon. They may slip off in the diseased vessel and then bruise the vessel. 
OBJECTIVE: To evaluate the safety and effectiveness of the new coronary rotary scoring balloon in vasodilatation. 
METHODS: (1) Finite element analysis: The three-dimensional finite element model of blood vessel was established by collecting relevant human tissue data, and then the three-dimensional finite element model of papillary balloon implantation in blood vessel and the three-dimensional finite element model of rotary scored balloon implantation in blood vessel were established to analyze the vascular stress, vascular displacement, balloon stress and balloon displacement 
during balloon expansion under different aeration pressures. (2) Animal experiments: Eight New Zealand rabbits with large ears were randomly divided into two groups, and the papillary balloon and rotary scored balloon were implanted in the iliac artery for expansion, with four rabbits in each group. After the balloon was withdrawn, samples were taken. Hematoxylin-eosin staining and transmission electron microscopy were used to observe the vascular injury.
RESULTS AND CONCLUSION: (1) Finite element analysis: There was no significant difference in the elastic properties of the two types of balloon. Under the same aeration pressure, the vascular stress, vascular displacement, balloon stress, and balloon displacement of the papillary balloon group were much greater than those of the rotary scored balloon group, and the uniformity of each index was better than that of the rotary scored balloon group. With the increase of inflatable pressure, the increase of blood vessel stress, blood vessel displacement, balloon stress and balloon displacement in the papillary balloon group was much greater than that in the rotary scored balloon group. (2) Animal experiments: Hematoxylin-eosin staining and transmission electron microscope observation showed that the vascular damage caused by rotary scored balloon expansion was limited to the intima, while the vascular damage caused by papillary balloon expansion was more serious, and the intima and media were seriously damaged. Hematoma formation could be seen in some segments; more inflammatory cells were found around the blood vessels, and local macrophage accumulation could be seen. (3) The results show that compared with papillary balloon dilatation, the risk of vascular occlusion and dissection caused by rotary scored balloon dilatation was less, but there was a certain probability of balloon bending. 

Key words: coronary atherosclerosis, predilatation, novel dilatation balloon, vascular injury, finite element analysis, rotary scored balloon

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