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首页> 外文期刊>IEEE / ASME Transactions on Mechatronics >The Use of Piezoelectric Ceramics for Electric Power Generation Within Orthopedic Implants
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The Use of Piezoelectric Ceramics for Electric Power Generation Within Orthopedic Implants

机译：压电陶瓷在整形外科植入物中的发电

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摘要

This paper presents the results of tests that demonstrate the feasibility of using piezoelectric (PZT) ceramics to generate in vivo electrical energy for orthopedic implants. Sensors encapsulated within implants could provide in vivo diagnostic capabilities such as the monitoring of implant duty (i.e., walking) cycle, detecting abnormally asymmetric or high forces, sensing misalignment and early loosening, and early detection of wear. Early diagnosis of abnormalities or impending failure is critical to minimize patient harm. However, the routine use of sensors and microprocessors embedded within orthopedic implants for diagnostic and monitoring purposes has been limited by the lack of a long-term self-contained power source capable of lasting the expected 20-year implant lifetimes. By embedding PZT materials within orthopedic implants, a small amount of the mechanical energy generated during normal physical activity can be converted into useful electrical energy. This in vivo energy source can power embedded microprocessors and sensors for a broad range of biomedical uses. The current work investigates the application of this technology to total knee replacement (TKR) implants, but it is applicable to many other implanted biomedical devices.
机译：本文介绍的测试结果证明了使用压电（PZT）陶瓷为整形外科植入物产生体内电能的可行性。封装在植入物中的传感器可以提供体内诊断功能，例如监测植入物的工作（即行走）周期，检测异常的不对称力或高力，检测未对准和早期松动以及早期检测磨损。早期诊断异常或即将发生的故障对于最大限度地减少患者伤害至关重要。但是，由于缺乏能够持续预期的20年植入物寿命的长期自备电源，因此限制了将骨科植入物内嵌的传感器和微处理器用于诊断和监测的常规用途。通过将PZT材料嵌入整形外科植入物中，可以将在正常身体活动期间产生的少量机械能转化为有用的电能。这种体内能源可以为嵌入式微处理器和传感器供电，以用于广泛的生物医学用途。当前的工作调查了该技术在全膝关节置换（TKR）植入物中的应用，但它也适用于许多其他植入的生物医学设备。

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