We have developed a 5-electrode recording system that combines an implantable electromyography (EMG) device package with transcutaneous inductive power transmission, near-infrared (NIR) transcutaneous data telemetry and 3 Mbps Wi-Fi data acquisition for chronic EMG recording in vivo . This system comprises a hermetically-sealed single-chip, 5-electrode Implantable EMG Acquisition Device (IEAD), a custom external powering and Implant Telemetry Module (ITM), and a custom Wi-Fi-based Raspberry Pi-based Data Acquisition (RaspDAQ) and relay device. The external unit (ITM and RaspDAQ) is powered entirely by a single battery to achieve the objective of untethered EMG recording, for the convenience of clinicians and animal researchers. The IEAD acquires intramuscular EMG signals at 17.85 ksps/electrode while being powered transcutaneously by the ITM using 22 MHz near-field inductive coupling. The acquired EMG data is transmitted transcutaneously via NIR telemetry to the ITM, which in turn, transfers the data to the RaspDAQ for relaying to a laptop computer for display and storage. We have also validated the complete system by acquiring EMG signals from rodents for up to two months. Following the explantation of the devices, we have also conducted failure and histological analysis on the devices and the surrounding tissue, respectively.

中文翻译：

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具有完全可植入5电极EMGxbrk采集设备的3Mbps，基于802.11g的EMG记录系统。

我们已经开发了一种五电极记录系统，该系统将植入式肌电图（EMG）设备套件与经皮感应功率传输，近红外（NIR）经皮数据遥测和3 Mbps Wi-Fi数据采集相结合，用于慢性EMG记录 体内 。该系统包括密封的单芯片5电极可植入EMG采集设备（IEAD），定制的外部供电和植入遥测模块（ITM）以及基于Wi-Fi的定制的基于Raspberry Pi的数据采集（RaspDAQ） ）和中继设备。外部单元（ITM和RaspDAQ）完全由单个电池供电，以实现不受限制的EMG记录，从而为临床医生和动物研究人员提供了便利。IEAD以17.85 ksps /电极的速度采集肌内肌电信号，同时由ITM使用22 MHz的近场感应耦合经皮供电。所获取的EMG数据通过NIR遥测技术经皮传输至ITM，ITM再将数据传输至RaspDAQ，以中继至笔记本电脑进行显示和存储。我们还通过从啮齿动物获取长达两个月的EMG信号来验证整个系统。植入器械后，我们还分别对器械和周围组织进行了破坏和组织学分析。