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形水凝插头用于纤维环修复:从材料设计到体内验证

Mao-Dan Nie^1,2,3, Bing-Kun Bao¹, Ning-Ze Zhang⁴

¹School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China.

Journal of orthopaedic translation

|July 14, 2025

概括

一种新型的水凝插头有效地修复了annulus纤维的缺陷,与线相比,显示出优越的机械性能和生物相容性. 这项创新旨在预防重新,并改善退行性脊柱疾病患者的治疗结果.

科学领域:

生物材料科学生物材料科学
脊柱外科手术脊柱外科手术
再生医学是一种再生医学.

背景情况:

椎间盘 (IVD) 是常见的退行性脊柱疾病.
目前对纤维环 (AF) 缺陷的治疗方法通常会导致重新结.
有效的AF修复策略对于预防再并提高手术成功至关重要.

研究的目的:

开发和评估一种新的水凝插头,用于修复显著的AF缺陷.
改善手术结果,降低IVD的再的风险.
与现有方法相比,为AF修复创造一种具有优越性质的生物材料.

主要方法:

设计了一种新的水凝插头,使用甲基酸移植的氨酸和4臂聚乙烯甘醇.
有限元 (FE) 建模优化了插头的几何结构,用于IVD维修.
对水凝的微观结构,胀,机械性能,降解和生物相容性进行了严格的评估.
在ex vivo和in vivo山羊IVD损伤模型中评估了修复功效,将插头与线修复和未经处理的对照进行了比较.

主要成果:

水凝插头表现出快速膨胀,类似AF的机械性能,稳定的降解,以及出色的生物相容性.
FE模拟确定了最佳的插头几何结构,以实现均的应力分布和腰部稳定性.
在体内研究表明,与修复相比,没有显著的插头退化,炎症最小,压力强度优越.
在一万次循环负荷后,插头在ex vivo模型中保持了其位置.

结论:

一种新的水凝插头系统有效地修复了大型AF缺陷,比传统接提供了优越的机械性能和生物相容性.
开发的水凝插头显示出在微创脊柱手术中临床翻译的巨大潜力.
这种创新的植入物解决了有效修复AF缺陷的未满足需求,有望改善患者的治疗结果.

关键词:

纤维的修复.椎间盘切除手术 (Disccectomy) 是一个切除椎间盘的手术.子形的水凝插头.重生是为了重生.

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