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Safe Neuromuscular Electrical Stimulator Designed for the Elderly

机译：专为老年人设计的安全神经肌肉电刺激器

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摘要

A stimulator for neuromuscular electrical stimulation (NMES) was designed, especially suiting the requirements of elderly people with reduced cognitive abilities and diminished fine motor skills. The aging of skeletal muscle is characterized by a progressive decline in muscle mass, force, and condition. Muscle training with NMES reduces the degradation process. The discussed system is intended for evoked muscle training of the anterior and posterior thigh. The core of the stimulator is based on a microcontroller with two modular output stages. The system has two charge-balanced biphasic voltage-controlled stimulation channels. Additionally, the evoked myoelectric signal (M-wave) and the myokinematic signal (surface acceleration) are measured. A central controller unit allows using the stimulator as a stand-alone device. To set up the training sequences and to evaluate the compliance data, a personal computer is connected to the stimulator via a universal serial bus. To help elderly people handle the stimulator by themselves, the user interface is kept very simple. For safety reasons, the electrode impedance is monitored during stimulation. A comprehensive compliance management with included measurements of muscle activity and stimulation intensity enables a scientific use of the stimulator in clinical trials.
机译：设计了一种用于神经肌肉电刺激（NMES）的刺激器，特别适合认知能力降低和精细运动技能降低的老年人的需求。骨骼肌的衰老的特征是肌肉质量，力量和状况的逐渐下降。使用NMES进行肌肉训练可减少降解过程。所讨论的系统旨在用于大腿前部和后部的诱发肌肉训练。刺激器的核心基于具有两个模块化输出级的微控制器。该系统具有两个电荷平衡的双相电压控制的刺激通道。另外，测量诱发的肌电信号（M波）和肌动力信号（表面加速度）。中央控制器单元允许将刺激器用作独立设备。为了设置训练序列并评估依从性数据，将个人计算机通过通用串行总线连接到刺激器。为了帮助老年人自己操作刺激器，用户界面保持非常简单。出于安全原因，在刺激过程中会监测电极阻抗。全面的依从性管理，包括肌肉活动和刺激强度的测量，可以在临床试验中科学使用刺激器。

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