灵活的压力传感器阵列以手指皮为灵感,用于在全膝关节关节整形术期间监测间隙平衡
Ziheng Wang1, Tianci Zhang2, Hongyi Shao3
1State Key Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing, 100084, China; AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China.
Biosensors & bioelectronics
|February 12, 2026
概括
这项研究引入了一种用于全膝关节整形的新型无线传感器,通过监测软组织平衡来提高手术精度. 这项技术提高了下肢对齐和膝关节置换手术后的患者恢复.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 整形外科手术 整形外科手术
背景情况:
- 全膝关节整形术 (TKA) 是治疗末期膝关节关节炎的常见手术,假肢稳定性对功能结果至关重要.
- 术内软组织失衡是TKA衰竭和修复手术的主要原因,通常依赖于外科医生的经验.
- 在TKA期间评估平衡的现有方法在测量范围和灵敏度上可能有局限性.
研究的目的:
- 开发和验证一个带有灵活压力传感器阵列的无线数字系统,用于在TKA期间实时监控手术内平衡.
- 为了应对在TKA程序中平衡测量范围和灵敏度的挑战.
- 提供一个规格独立的解决方案,用于评估软组织平衡在部部件-聚乙烯间距清除.
主要方法:
- 开发了一种超薄的灵活压力传感器阵列,灵感来自手指皮的灵活压力传感器阵列,具有跨度微观结构.
- 传感器性能的表征,包括灵敏度,测量范围,响应/恢复时间和循环稳定性.
- 使用假肢骨模型进行验证,以可视化不同曲角度的定量力.
- 尸体测试以确认临床有效性和与真实骨质和手术内力量的兼容性.
主要成果:
- 这种生物灵感传感器表现出高线性灵敏度 (0.016 N−1/0.002 N−1),广泛的测量范围 (每个传感器0-150 N,总计>440 N),以及快速的响应/恢复时间 (50/75 ms).
- 传感器在 >1000 个周期内保持稳定.
- 假骨和尸体验证证证实了该系统提供实时定量力可视化的能力及其临床有效性.
结论:
- 开发的无线数字系统为在TKA期间监测软组织平衡提供了一种新的,与规范无关的方法.
- 该系统的性能特征和验证结果表明,它有潜力提高膝关节置换手术准确性和患者的治疗结果.
- 这项技术可以通过提供客观,实时的生物力学稳定性反来减少TKA的故障和修订.
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