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在子中使用形状记忆合金用于部脊柱手术

F Arlt¹, D Winkler¹, N Knoop¹

¹Department of Neurosurgery, University Hospital Leipzig, Leipzig, Germany.

Journal of neurological surgery. Part A, Central European neurosurgery

|March 11, 2025

概括

一个新的形状记忆合金子宫适应椎间盘空间,为前椎间盘切除和融合 (ACDF) 手术提供稳定的支持. 这种创新的植入物旨在减少骨去除并改善患者的治疗结果.

科学领域:

生物材料工程生物材料工程
脊柱外科手术脊柱外科手术
整形外科植入物整形外科植入物

背景情况:

退行性椎脊椎疾病需要除去椎间盘和融合 (ACDF).
目前的ACDF需要精确的装配,并且可能涉及大量的骨移除.
形状记忆材料为适应性脊柱植入物设计提供了潜力.

研究的目的:

设计和开发一个适应性宫,用于ACDF手术.
确保子提供结构支持并恢复脊柱对齐.
为了实现固体融合,同时最大限度地减少侵入性.

主要方法:

一个新的子被设计使用聚乙烯基 (PEEK) 机身和形状记忆合金 (SMA) 执行器 (-).
该SMA机制允许子自动适应椎间盘间空间几何.
在一个人造椎脊柱模型上进行了生物力学测试,包括压缩和横向曲.

主要成果:

子通过35°C的SMA转换证明了几何适应.
生物力学测试显示,在循环负荷下植入物定位稳定,由恒定的歇斯底里斯曲线证明.
该PEEK子的宽度为14mm,长度为16mm,高度为4mm.

结论:

为ACDF成功开发了一种新的适应性子.
这种植入物有可能通过尽量减少骨去除来减少外科和术后的发病率.
计划在尸体样本中进行进一步的生物力学测试,为体内应用铺平道路.

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