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一种结合实验和数值方法,以评估网生物力学稳定性 in situ

Arthur Jourdan¹, Anthony Vegleur¹, Jeff Bodner²

¹Medtronic, Surgical Operating Unit, General Surgical Technologies - BioTex, Trévoux, France.

Medical engineering & physics

|February 8, 2025

概括

这项研究分析了网和腹壁 (AW) 的相互作用,使用金属微珠和CT扫描. 结果显示,在网状肌肉运动和应变方面存在显著差异,这对于改善修复植入物至关重要.

科学领域:

生物医学工程生物医学工程
手术创新在外科创新.
生物力学生物力学

背景情况:

腹腔是常见的手术问题,复发率很高.
目前的网格很难与腹壁 (AW) 生物力学匹配,导致网格失效.
了解术后的网状AW相互作用对于改善植入物设计至关重要.

研究的目的:

开发和验证一种新的方法来量化植入后的mesh-AW相互作用.
为了评估在不同的腹内压力下网状运动和腹壁应变.
为改善网设计和减少复发提供数据.

主要方法:

在三个人体标本中植入金属微珠涂层合成网的Open Rives-Stoppa植入.
在增加腹腔内压力 (高达30mmHg) 时进行的CT扫描,以模拟呼吸.
微珠的3D坐标跟踪计算网状AW运动和应变.

主要成果:

网状肌肉运动 (滑动) 测量在2.3 ± 1.3mm的30mmHg时.
腹壁肌肉表现出明显更高的应变 (12.9 ± 4.7%) 与网 (4.7 ± 1.1%) 相比,在30 mmHg).
可重复性研究证实了拟议测量协议的可靠性.

结论:

网格和AW之间的物质性质差异显著影响术后生物力学.
开发的方法提供了对in-vivo网状行为有价值的见解.
这些发现可以指导下一代网的设计,以改善整合和减少复发.

关键词:

腹部 Hernia 的使用方法生物力学生物力学扫描图像扫描 (CT-Scan) 是一种扫描技术.主要稳定性主要稳定性合成网格合成网格合成网格

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