Reliability of power supply for current implantable electronic devices is a critical issue for longevity and for reducing the risk of device failure. Energy harvesting is an emerging technology, representing a strategy for establishing autonomous power supply by utilizing biomechanical movements in human body. Here, a novel “Twistron energy cell harvester” (TECH), consisting of coiled carbon nanotube yarn that converts mechanical energy of the beating heart into electrical energy, is presented. The performance of TECH is evaluated in an in vitro artificial heartbeat system which simulates the deformation pattern of the cardiac surface, reaching a maximum peak power of 1.42 W kg⁻¹ and average power of 0.39 W kg⁻¹ at 60 beats per minute. In vivo implantation of TECH onto the left ventricular surface in a porcine model continuously generates electrical energy from cardiac contraction. The generated electrical energy is used for direct pacing of the heart as documented by extensive electrophysiology mapping. Implanted modified carbon nanotubes are applicable as a source for harvesting biomechanical energy from cardiac motion for power supply or cardiac pacing.

中文翻译：

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植入的碳纳米管从心跳中获取电能用于医疗植入

当前植入式电子设备的电源可靠性是延长使用寿命和降低设备故障风险的关键问题。能量收集是一项新兴技术，代表了一种利用人体生物力学运动建立自主供电的策略。在这里，展示了一种新颖的“Twistron能量细胞采集器”（TECH），由卷绕的碳纳米管纱线组成，可将跳动的心脏的机械能转化为电能。 TECH的性能在体外人工心跳系统中进行评估，该系统模拟心脏表面的变形模式，在每分钟60次心跳时达到1.42 W kg ^{-1的最大峰值功率和0.39 W kg -1}的平均功率。将 TECH 体内植入猪模型的左心室表面，可通过心脏收缩持续产生电能。所产生的电能用于心脏的直接起搏，如广泛的电生理图记录所记录的那样。植入的改性碳纳米管可用作从心脏运动中收集生物力学能量以用于供电或心脏起搏的来源。