Wan Long,Li Manyuan,Wu Wenbo.Biomechanical finite element analysis of ureteral tunnel during ureteral bladder replantation[J].Journal of Clinical Pediatric Surgery,2024,(12):1186-1190.[doi:10.3760/cma.j.cn101785-202405014-014]
输尿管膀胱再植术中输尿管隧道的生物力学有限元分析
- Title:
- Biomechanical finite element analysis of ureteral tunnel during ureteral bladder replantation
- Keywords:
- Vesico-Ureteral Reflux; Replantation; Ureter; Finite Element Analysis
- 摘要:
- 目的 探讨输尿管膀胱再植术中输尿管黏膜下隧道的生物力学效应。方法 应用ANSYS 2020 R2软件建立不同膀胱输尿管模型,并对其储尿期及排尿期生物力学进行有限元分析(finite element analysis,FEA),评估不同模型膀胱输尿管连接部的应力及应变分布。结果 模拟结果显示,在储尿期,模型A1、A3型隧道段最大等效应力比A2型分别高1%、3%;在排尿期,A1、A3型隧道段最大等效应力分别比A2型高9%、12%,差别均不明显。但当B型与A2型相比时,储尿期及排尿期最大等效应力分别减少了46%和53%。结论 黏膜下隧道是输尿管膀胱再植术的关键所在,适当改变其长度对于生物力学的影响并不十分明显。
- Abstract:
- Objective To explore the biomechanical effect of ureteral submucosal tunnel during ureteral reimplantation. Methods Different vesicoureteral models were established with ANSYS 2020 R2 software.Finite element analysis (FEA) of biomechanics during storage and urination periods was conducted for evaluating the stress and strain distribution of vesicoureteral junction under different models. Results Simulation results indicated that during urine storage period,maximal equivalent stress of A1/A3 type tunnel sections was 1% and 3% higher than that of A2 type tunnel sections; During urination period,maximal equivalent stress of A1/A3 type tunnel segments was 9% and 12% higher than that of A2 type and the difference was insignificant.When compared with type A2,storage and urination periods of type B decreased by 46% and 53% respectively. Conclusions Ureteral submucosal tunnel is essential for ureteral reimplantation.However,changing its length appropriately has no significant effect on biomechanics.
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备注/Memo
收稿日期:2024-5-7。
通讯作者:吴文波,Email:1650960176@qq.com